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Resultados: 58.062 questões

Página 2.646 de 2.904

  • Ciências da Natureza

    Física

    Leia o texto e responda:

    “Como Usain Bolt consegue correr tão rápido?

    Bolt normalmente completa uma prova de 100 metros rasos com 41 passos, cerca de três ou quatro a menos que seus adversários. O comprimento da passada é o principal fator que diferencia um bom corredor, capaz de correr os 100 metros em menos de dez segundos, daqueles que não conseguem fazer isso.”

    (Disponível em http://www.bbc.com/portuguese/noticias, acessado em 03/09/2016).

    Considerando os 100 metros corridos por Bolt no tempo de 9,8 segundos, sua velocidade média aproximada, em Km/h, é igual a:

    Escolha uma alternativa para a questão e9cdb5ef-b3
  • Linguagens

    Inglês

    TEXT

         BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
         In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
          In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
         “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
         His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
       The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
         In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
       Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
        But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
         While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
         But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
         One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
         In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
         As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
         Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
       Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
        Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
        Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
         Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
         Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
          Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
         Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
         “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
    The sentences “Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme” and “Mr. Barbosa wrote a book on affirmative action in the United States” contain, respectively, a/an
    Escolha uma alternativa para a questão e9d07780-b8
  • Ciências da Natureza

    Física

    Uma empresa de comércio eletrônico tem em sua página, dentre outros produtos, o seguinte anúncio:
    “Espelhos convexos para condomínios, garagens, estacionamentos, lojas, entre outros.
    Diâmetros: 13 cm; 20 cm; 30 cm; 40 cm; 50 cm; 60 cm; 80 cm.
    ESPELHO CONVEXO DE 40 cm de diâmetro:
    Consulte-nos*
    ESPELHO CONVEXO DE 50 cm de diâmetro:
    Consulte-nos*
    ESPELHO CONVEXO DE 60 cm de diâmetro:
    Consulte-nos*
    *valor unitário e para pagamento à vista. DESPACHAMOS PARA TODO O BRASIL.”

    O espelho convexo é bastante utilizado com a finalidade de melhorar a vigilância em espaços de grande fluxo de pessoas. A imagem do interior desses espaços, condomínios, garagens, estacionamentos, lojas dentre outros, vista através desse espelho, será:
    Escolha uma alternativa para a questão e9d0b362-b3
  • Ciências Humanas

    História

    Imagem da questão de História, Faculdade de Medicina de São José do Rio Preto 2016, Expansão Comercial a Marítima: a busca de novos mundos

    (Serge Gruzinski. 1480-1520: a passagem do século, 2008. Adaptado.)


    Considerando o mapa e o contexto histórico, é correto constatar que essas viagens

    Escolha uma alternativa para a questão e9d0e33c-d7
  • Linguagens

    Inglês

    TEXT

         BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
         In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
          In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
         “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
         His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
       The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
         In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
       Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
        But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
         While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
         But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
         One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
         In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
         As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
         Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
       Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
        Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
        Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
         Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
         Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
          Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
         Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
         “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
    In the sentences “He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision,” “he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki,” and “But the same public glare that has turned him into a celebrity has singed him as well,” the relative clauses in each one are, respectively, classified as
    Escolha uma alternativa para a questão e9d37b6e-b8
  • Ciências da Natureza

    Física

    Uma garrafa de vidro com água é mantida em uma geladeira, que está em pleno funcionamento, durante certo tempo. Ao se retirar a garrafa da geladeira e colocá-la sobre uma mesa, ocorre a formação de gotas de água na superfície externa da garrafa.
    Isso ocorre principalmente devido à
    Escolha uma alternativa para a questão e9d393f6-b3
  • Ciências Humanas

    História

    A descoberta de ouro, no Brasil do século XVII, provocou, entre outros,
    Escolha uma alternativa para a questão e9d4284f-d7
  • Linguagens

    Inglês

    TEXT

         BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
         In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
          In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
         “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
         His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
       The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
         In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
       Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
        But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
         While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
         But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
         One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
         In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
         As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
         Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
       Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
        Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
        Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
         Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
         Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
          Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
         Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
         “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
    The sentences “he is the driving force behind a series of socially liberal and establishmentshaking rulings” and “Mr. Barbosa was one of their top choices for president in next year’s elections” contain, respectively, a/an
    Escolha uma alternativa para a questão e9d699e4-b8
  • Ciências da Natureza

    Física

    A Cuiabá do início do século XX tinha o serviço de iluminação pública à gás. De lá para cá, muita coisa mudou, a partir do ano de 1919, a iluminação pública passou a ser por energia elétrica.

    Atualmente, o serviço de iluminação pública abrange praticamente toda Cuiabá, e ligar e desligar todas as lâmpadas manualmente, seria uma tarefa quase que impossível. Os avanços tecnológicos propiciados pela ampliação dos conhecimentos das propriedades físicas da matéria resultaram, em parte, na melhoria do bem-estar da sociedade, tornando o acionamento da iluminação pública automático.

    No ano de 1905, o cientista, Albert Einstein, descreveu o efeito fotoelétrico, o qual serviu posteriormente para o desenvolvimento dos relés fotoelétricos. Atualmente, o acionamento da iluminação pública é automático, as células fotoelétricas detectam a presença de luz natural.

    Sobre o efeito fotoelétrico, é correto afirmar que:

    Escolha uma alternativa para a questão e9d71a5a-b3
  • Ciências Humanas

    História

    A Revolução é feita de sombra, mas, acima de tudo, de luz.

    (Michel Vovelle. A Revolução Francesa explicada à minha neta, 2007.)


    A frase apresenta a Revolução Francesa, destacando
    Escolha uma alternativa para a questão e9d83c7c-d7
  • Linguagens

    Inglês

    TEXT

         BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
         In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
          In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
         “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
         His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
       The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
         In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
       Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
        But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
         While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
         But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
         One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
         In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
         As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
         Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
       Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
        Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
        Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
         Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
         Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
          Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
         Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
         “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
    The sentences “I have a temperament that doesn’t adapt well to politics” and “I’m not a candidate for anything” are, respectively,
    Escolha uma alternativa para a questão e9d99784-b8
  • Ciências da Natureza

    Química

    O gelo seco não é a água no estado sólido, e sim o dióxido de carbono (CO2) sólido. Considerando que a temperatura na superfície de um bloco de gelo-seco é de -78,5º C. À medida que o gelo-seco é aquecido, ele se transforma diretamente em dióxido de carbono gasoso - e não em líquido. Sobre esse fenômeno, assinale a alternativa correta.
    Escolha uma alternativa para a questão e9d9d2e2-b3
  • Ciências Humanas

    História

    Ao mesmo tempo em que se exaltava a libertação dos escravos, temia-se por uma revolução fatal ao país, afirmando-se a necessidade de uma abolição lenta e gradual. Não havia um maior entrosamento entre os rebeldes negros e os abolicionistas, sendo que a própria propaganda abolicionista não se dirigia aos escravos, que tendiam a ser considerados bárbaros, incapazes de exercer ações políticas.

    (Lilia Moritz Schwarcz. Retrato em branco e negro, 1987. Adaptado.)

    O texto, que se refere ao Brasil da segunda metade do século XIX, trata
    Escolha uma alternativa para a questão e9db9514-d7
  • Linguagens

    Inglês

    TEXT

         BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
         In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
          In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
         “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
         His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
       The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
         In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
       Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
        But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
         While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
         But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
         One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
         In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
         As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
         Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
       Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
        Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
        Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
         Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
         Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
          Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
         Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
         “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
    The sentence “They are televising the court’s proceedings” in the passive becomes
    Escolha uma alternativa para a questão e9dc945e-b8
  • Ciências da Natureza

    Química

    Os compostos inorgânicos podem, muitas vezes, ajudar os investigadores a solucionar crimes, por exemplo: é possível identificar as “impressões latentes” (impressões digitais que não são possíveis visualizar sem um tratamento específico). Ao tocarmos em objetos, deixamos neles várias substâncias, e uma delas é o Cloreto de Sódio (NaCl), expelido por meio do suor. Para encontrar essa impressão, os investigadores borrifam os objetos que o suspeito tocou, com uma solução de Nitrato de Prata (AgNO3) que, ao entrar em contato com o Cloreto de Sódio, reage formando o Cloreto de Prata (AgCl). O Cloreto de Prata é branco e, quando exposto à luz solar, revela as linhas da impressão digital do criminoso. Conforme reação química abaixo.
    Imagem da questão de Química, IF-MT 2016, Soluções e Substâncias Inorgânicas
    Analise a reação, e assinale a alternativa correta
    Escolha uma alternativa para a questão e9dc9ddc-b3
  • Linguagens

    Inglês

    TEXT

         BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
         In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
          In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
         “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
         His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
       The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
         In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
       Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
        But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
         While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
         But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
         One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
         In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
         As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
         Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
       Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
        Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
        Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
         Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
         Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
          Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
         Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
         “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
    In the sentences “Mr. Barbosa took on the entire legal system,” “he is overseeing the precedent-setting trial,” and “Mr. Barbosa has at times been exasperated,” the verbs are, respectively, in the
    Escolha uma alternativa para a questão e9df69e1-b8
  • Ciências Humanas

    História

        Os europeus estavam convencidos de que a África seria um grande mercado para os produtos de sua indústria a partir do momento que se civilizasse, isto é, que adotasse as crenças, os valores e os modos de vida dominantes na Europa. Contavam para isso com a ação dos missionários cristãos e dos comerciantes europeus.


    (Alberto da Costa e Silva. A África explicada aos meus filhos, 2008.)


    O texto expõe a combinação de estratégias e interesses europeus na colonização da África, a partir do final do século XVIII. Entre essas estratégias, é correto citar

    Escolha uma alternativa para a questão e9e024a6-d7
  • Ciências da Natureza

    Química

    Um determinado atleta precisou perder peso para participar dos Jogos Olímpicos, realizados no Rio de Janeiro em 2016. Considerando a tabela de calorias dos alimentos abaixo, analise as afirmativas: 
    Figura 1 de 2 da questão de Química, IF-MT 2016, Soluções e Substâncias Inorgânicas

    Figura 2 de 2 da questão de Química, IF-MT 2016, Soluções e Substâncias Inorgânicas
    I. Ao beber 960 mL de suco de acerola natural, o atleta ingeriu menos calorias que se tivesse tomado 240 mL de suco de maçã natural. 
    II. Ao beber 960 mL de suco de acerola natural, o atleta ingeriu mais calorias que se tivesse tomado 240 mL de suco de maçã natural.
    III. Ao tomar 500 ml de água de coco, o atleta ingeriu aproximadamente 129 calorias.
    IV. Ao beber 4 copos de suco de tomate natural, o atleta ingeriu menos calorias que se tivesse tomado 1 copo de suco manga natural.
    Estão corretas:
    Escolha uma alternativa para a questão e9e25621-b3
  • Ciências Humanas

    História

    “A questão social é um caso de polícia” — esta frase, atribuída a Washington Luís, presidente da República de 1926 até a sua deposição em 1930, é geralmente apontada como o sintoma de como as questões relativas ao trabalho (a “questão social”) eram descuidadas pelo Estado, durante o período da chamada República Velha (1889-1930).

    (Kazumi Munakata. A legislação trabalhista no Brasil, 1984.)

    A associação da frase de Washington Luís a um “sintoma” característico da Primeira República brasileira pode ser exemplificada pela
    Escolha uma alternativa para a questão e9e426d5-d7
  • Linguagens

    Inglês

    TEXT

         BRASÍLIA — Brazil’s highest court has long viewed itself as a bastion of manners and formality. Justices call one another “Your Excellency,” dress in billowing robes and wrap each utterance in grandiloquence, as if little had changed from the era when marquises and dukes held sway from their vast plantations.
         In one televised feud, Mr. Barbosa questioned another justice about whether he would even be on the court had he not been appointed by his cousin, a former president impeached in 1992. With another justice, Mr. Barbosa rebuked him over what the chief justice considered his condescending tone, telling him he was not his “capanga,” a term describing a hired thug. 
          In one of his most scathing comments, Mr. Barbosa, the high court’s first and only black justice, took on the entire legal system of Brazil — where it is still remarkably rare for politicians to ever spend time in prison, even after being convicted of crimes — contending that the mentality of judges was “conservative, pro-status-quo and pro-impunity.”
         “I have a temperament that doesn’t adapt well to politics,” Mr. Barbosa, 58, said in a recent interview in his quarters here in the Supreme Federal Tribunal, a modernist landmark designed by the architect Oscar Niemeyer. “It’s because I speak my mind so much.” 
         His acknowledged lack of tact notwithstanding, he is the driving force behind a series of socially liberal and establishment-shaking rulings, turning Brazil’s highest court — and him in particular — into a newfound political power and the subject of popular fascination. 
       The court’s recent rulings include a unanimous decision upholding the University of Brasília’s admissions policies aimed at increasing the number of black and indigenous students, opening the way for one of the Western Hemisphere’s most sweeping affirmative action laws for higher education. 
         In another move, Mr. Barbosa used his sway as chief justice and president of the panel overseeing Brazil’s judiciary to effectively legalize same-sex marriage across the country. And in an anticorruption crusade, he is overseeing the precedent-setting trial of senior political figures in the governing Workers Party for their roles in a vast vote-buying scheme.
       Ascending to Brazil’s high court, much less pushing the institution to assert its independence, long seemed out of reach for Mr. Barbosa, the eldest of eight children raised in Paracatu, an impoverished city in Minas Gerais State, where his father worked as a bricklayer.  
        But his prominence — not just on the court, but in the streets as well — is so well established that masks with his face were sold for Carnival, amateur musicians have composed songs about his handling of the corruption trial and posted them on YouTube, and demonstrators during the huge street protests that shook the nation this year told pollsters that Mr. Barbosa was one of their top choices for president in next year’s elections.
         While the protests have subsided since their height in June, the political tumult they set off persists. The race for president, once considered a shoo-in for the incumbent, Dilma Rousseff, is now up in the air, with Mr. Barbosa — who is now so much in the public eye that gossip columnists are following his romance with a woman in her 20s — repeatedly saying he will not run. “I’m not a candidate for anything,” he says. 
         But the same public glare that has turned him into a celebrity has singed him as well. While he has won widespread admiration for his guidance of the high court, Mr. Barbosa, like almost every other prominent political figure in Brazil, has recently come under scrutiny. And for someone accustomed to criticizing the so-called supersalaries awarded to some members of Brazil’s legal system, the revelations have put Mr. Barbosa on the defensive. 
         One report in the Brazilian news media described how he received about $180,000 in payments for untaken leaves of absence during his 19 years as a public prosecutor. (Such payments are common in some areas of Brazil’s large public bureaucracy.) Another noted that he bought an apartment in Miami through a limited liability company, suggesting an effort to pay less taxes on the property. In statements, Mr. Barbosa contends that he has done nothing wrong. 
         In a country where a majority of people now define themselves as black or of mixed race — but where blacks remain remarkably rare in the highest echelons of political institutions and corporations — Mr. Barbosa’s trajectory and abrupt manner have elicited both widespread admiration and a fair amount of resistance. 
         As a teenager, Mr. Barbosa moved to the capital, Brasília, finding work as a janitor in a courtroom. Against the odds, he got into the University of Brasília, the only black student in its law program at the time. Wanting to see the world, he later won admission into Brazil’s diplomatic service, which promptly sent him to Helsinki, the Finnish capital on the shore of the Baltic Sea. 
         Sensing that he would not advance much in the diplomatic service, which he has called “one of the most discriminatory institutions of Brazil,” Mr. Barbosa opted for a career as a prosecutor. He alternated between legal investigations in Brazil and studies abroad, gaining fluency in English, French and German, and earning a doctorate in law at Pantheon-Assas University in Paris. 
       Fascinated by the legal systems of other countries, Mr. Barbosa wrote a book on affirmative action in the United States. He still voices his admiration for figures like Thurgood Marshall, the first black Supreme Court justice in the United States, and William J. Brennan Jr., who for years embodied the court’s liberal vision, clearly drawing inspiration from them as he pushed Brazil’s high court toward socially liberal rulings.
        Still, no decision has thrust Mr. Barbosa into Brazil’s public imagination as much as his handling of the trial of political operatives, legislators and bankers found guilty in a labyrinthine corruption scandal called the mensalão, or big monthly allowance, after the regular payments made to lawmakers in exchange for their votes. 
        Last November, at Mr. Barbosa’s urging, the high court sentenced some of the most powerful figures in the governing Workers Party to years in prison for their crimes in the scheme, including bribery and unlawful conspiracy, jolting a political system in which impunity for politicians has been the norm.  
         Now the mensalão trial is entering what could be its final phases, and Mr. Barbosa has at times been visibly exasperated that defendants who have already been found guilty and sentenced have managed to avoid hard jail time. He has clashed with other justices over their consideration of a rare legal procedure in which appeals over close votes at the high court are examined. 
         Losing his patience with one prominent justice, Ricardo Lewandowski, who tried to absolve some defendants of certain crimes, Mr. Barbosa publicly accused him this month of “chicanery” by using legalese to prop up certain positions. An outcry ensued among some who could not stomach Mr. Barbosa’s talking to a fellow justice like that. “Who does Justice Joaquim Barbosa think he is?” asked Ricardo Noblat, a columnist for the newspaper O Globo, questioning whether Mr. Barbosa was qualified to preside over the court. “What powers does he think he has just because he’s sitting in the chair of the chief justice of the Supreme Federal Tribunal?” 
          Mr. Barbosa did not apologize. In the interview, he said some tension was necessary for the court to function properly. “It was always like this,” he said, contending that arguments are now just easier to see because the court’s proceedings are televised. 
         Linking the court’s work to the recent wave of protests, he explained that he strongly disagreed with the violence of some demonstrators, but he also said he believed that the street movements were “a sign of democracy’s exuberance.” 
         “People don’t want to passively stand by and observe these arrangements of the elite, which were always the Brazilian tradition,” he said. 
    The expression “Not just on the court, but in the streets as well” can be correctly rewritten as
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