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Resultados: 58.062 questões

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  • Linguagens

    Inglês

    Imagem da questão de Inglês, UECE 2021, Voz Ativa e Passiva | Passive and Active Voice

    https://www.theguardian.com/environment/ 2021/sep/27/

    In “we can take much of the climate burden from our children's shoulders” (lines 56-58), the passive voice becomes: much of the climate burden
    Escolha uma alternativa para a questão 96bf40b7-74
  • Linguagens

    Inglês

    Land of changes
    The southeastern region is changing more rapidly than any other part of the United States - not because the land is new, but because the area´s old, exhausted land is being given new life. The problems of the southeast are best illustrated by a story that goes back a decade before the turn of the century. The tale describes the funeral of a poor man. “They cut through solid marble to make his grave and yet the little marble tombstone they put above him was from Vermont. They buried him in the heart of a pine tree forest, and yet his pine coffin came form Ohio. They buried him beside an iron mine, and yet his nails in his coffin and the iron in the shovel came from Pittsburgh. They buried him in a coat form New York and shoes from Chicago and a shirt from Cincinnati. The South didn’t supply anything for that funeral except the body and the hole in the ground.”
    An outline of American Geography. International Communication Agency. USA. 1978.

    Based on the text, one can say that

    I. the story shows the south had added too many skills to its raw materials.
    II. geography has been kind to the Southeastern resources of the United States.
    III. the South needs to change more rapidly than other parts of the U.S.
    IV. the story told reflects the present southerner socio-economic context.
    V. the South did not supply anything to the funeral described in this text.

    Assinale a alternativa que contém somente afirmativas corretas.
    Escolha uma alternativa para a questão 96c163fd-c3
  • Observe a imagem.

    Imagem da questão de Conhecimentos Gerais, UFU-MG 2010, Questões Sociais
    Placa em estrada sul-africana: “Tome cuidado com os nativos”. Foto de 1960.
    Disponível em: www.veja.abril.com.br/historia/apartheid. Acesso em 04/04/2010.

    Sobre o Apartheid, é correto afirmar que: 
    Escolha uma alternativa para a questão 96c1af21-af
  • Linguagens

    Inglês

    Imagem da questão de Inglês, UECE 2021, Adjetivos | Adjectives

    https://www.theguardian.com/environment/ 2021/sep/27/

    The underlined words in “extreme heatwaves” (line 13), “current pledges” (lines 14- 15), “polluting countries” (line 32) function respectively as
    Escolha uma alternativa para a questão 96c1cffb-74
  • Matemática

    Matemática

      Em uma central de atendimento, cem pessoas receberam senhas numeradas de 1 até 100. Uma das senhas é sorteada ao acaso.

    Qual é a probabilidade de a senha sorteada ser um número de 1 a 20?

    Escolha uma alternativa para a questão 96c1f0ba-7f
  • Matemática

    Matemática

    Um artista utilizou uma caixa cúbica transparente para a confecção de sua obra, que consistiu em construir um polígono IMNKPQ, no formato de um hexágono regular, disposto no interior da caixa. Os vértices desse polígono estão situados em pontos médios de arestas da caixa. Um esboço da sua obra pode ser visto na figura.


    Imagem da questão de Matemática, ENEM 2016, Geometria Plana


    Considerando as diagonais do hexágono, distintas de IK, quantas têm o mesmo comprimento de IK?

    Escolha uma alternativa para a questão 96c36762-31
  • Ciências da Natureza

    Física

    Um fabricante de dispositivos óticos precisa construir um aparelho que funcione dentro de um líquido que possui índice de refração nL. Para o funcionamento do equipamento, é necessário ter duas lentes esféricas: uma convergente e outra divergente. Para isso, se dispõe de dois tipos de materiais transparentes, os quais possuem índices de refração n1 e n2. Sabe-se que a relação entre todos os índices é n1<nL<n2 e que o fabricante ainda pode optar por duas geometrias, g1 e g2, mostradas na figura a seguir.


    Imagem da questão de Física, UFAC 2011, Lentes


    Para saber quais lentes seriam usadas, cinco engenheiros responsáveis, utilizando a Lei de Snell, chegaram, separadamente, às seguintes conclusões:


    (I) O material de índice de refração n1 é útil para construir uma lente convergente de geometria g1.

    (II) O material de índice de refração n2 é útil para construir uma lente divergente de geometria g2.

    (III) O material de índice de refração n2 é útil para construir uma lente convergente e sua forma geométrica teria que ser do tipo g1.

    (IV) O material de índice de refração n1 é útil para construir uma lente convergente que tenha a forma g2.

    (V) O material de índice de refração n1 é útil para construir uma lente divergente de geometria g1.


    Para fabricar corretamente o dispositivo, deve-se levar em consideração que:
    Escolha uma alternativa para a questão 96c3bae4-e4
  • Linguagens

    Inglês

    THE FIRST CHILD OF BOMI AND JER Bulsara, the boy named Farrokh was born on September 5, 1946, in the British protectorate of Zanzibar, an island off the east coast of Africa. The Bulsaras were Paris’s, Zoroastrian descendents of Persians who fled to India to escape Muslim persecution. While Bomi worked as a high-court cashier for the British government, Jer looked after Farrokh, a lively child who took an early interest in music: “Folk, opera, classical, he loved them all,” she later said. “I think he always wanted to be a showman.”
    When Farrokh was six, Jer gave birth to his sister, Kashmira, but the boy’s happy home life would be short-lived. As Kashmira later said, “I only had a year of him,” referrring to the fact that her older brother was sent to St. Peter’s, a boarding school in India, not far from Bombay. “I was a precocious child,” Farrokh would say many years later, when he was known as Fred Mercury, “and my parents thought boarding school would do me good. It was an upheaval of an upbringing, which seems to have worked, I guess.”
    Life magazine. Queen. Fev. 2019.

    Com base no texto, é correto afirmar que
    Escolha uma alternativa para a questão 96c4480b-c3
  • Linguagens

    Inglês

    Imagem da questão de Inglês, UECE 2021, Verbos | Verbs

    https://www.theguardian.com/environment/ 2021/sep/27/

    In “The analysis found that only those aged under 40 years today will live to see the consequences of the choices made on emission cuts.” (lines 111-114), the underlined verbs are respectively
    Escolha uma alternativa para a questão 96c471df-74
  • Linguagens

    Inglês

    School Sports Injuries: 9 Prevention Tips

    Reduce the risk of sports injuries with these essential guidelines.

    Sports medicine doctors offer these tips to help reduce the number of youth sports injuries:

    1. Warm-up and cool down properly. Warm-up exercises, such as stretching and light jogging, can help minimize the chance of muscle strain or other soft tissue injury and make the body’s tissues warmer and more flexible. Cooling down exercises loosen the body’s muscles that have tightened during exercise. Make warm-ups and cool downs part of your kids’ routine before and after sports participation.

    2. Know and abide by the rules of the sport. Kids should also be instructed in how to use the sport’s athletic equipment properly.

    3. Avoid playing when very tired or in pain. Children should take a break immediately if in pain.

    4. Be in proper physical condition to play the sport. Before starting a sport, have your child work out to prepare.

    5. Keep kids hydrated. Make sure there is adequate water or other liquids to maintain proper hydration. Kids need to drink 8 ounces of fluid every 20 minutes, plus more after playing.

    6. Wear appropriate protective gear, such as shin guards for soccer, a hard-shell helmet when facing a baseball or softball pitcher, a helmet and body padding for ice hockey. Make sure your child uses the proper protective gear for a particular sport. This may lessen the chances of being injured.

    7. Make sure the coach is certified. Enroll your child in organized sports through schools, community clubs, and recreation areas where there may be adults who are certified coaches. Ask about the coach’s background and training.

    8. Get a preseason physical examination. Kids should have a thorough exam from a physician before participating in sports, including a cardiovascular workup to make sure there are no pre-existing conditions.

    9. Insist on a team emergency plan. What happens if a child is injured? Where’s the first-aid kit? Who drives to the hospital? Make sure any injured child sees a doctor right away.

    Extracted from The Reader’s Digest, 2010.
    Com base no texto, pode-se afirmar que:

    I - If kids warm up before exercising, they will never have any problems like muscle strain or other tissue injury.
    II - Wearing protective gear will eliminate the possibility of muscle strain.
    III - Providing children with proper hydration is crucial to avoid problems during and after sport practice.
    IV - Kids should undergo a health check-up before sport practice.

    Assinale a alternativa que contém somente afirmativas corretas.
    Escolha uma alternativa para a questão 96c4f08b-af
  • Matemática

    Matemática

    A prefeitura de uma cidade detectou que as galerias pluviais, que possuem seção transversal na forma de um quadrado de lado 2 m, são insuficientes para comportar o escoamento da água em caso de enchentes. Por essa razão, essas galerias foram reformadas e passaram a ter seções quadradas de lado igual ao dobro das anteriores, permitindo uma vazão de 400 m3/s. O cálculo da vazão V (em m3/s) é dado pelo produto entre a área por onde passa a água (em m2) e a velocidade da água (em m/s).


    Supondo que a velocidade da água não se alterou, qual era a vazão máxima nas galerias antes das reformas?

    Escolha uma alternativa para a questão 96c6c348-31
  • Linguagens

    Inglês

    Active Trips: Grab your gear and head into the wilderness with National Geographic! On our active expeditions, you'll venture off the beaten path in spectacular places around the globe, following in the footsteps of National Geographic’s explorers and adventurers. Trek through some of the world's most legendary mountain ranges; go kayaking amid icebergs and calving glaciers; and discover wild and stunning landscapes by foot, horseback, and even dogsled. Whether you find yourself snorkeling with majestic whale sharks, snowshoeing to remote waterfalls, or hiking an ancient pilgrimage route, you’ll experience the unforgettable rush that comes with achieving a personal quest. And we keep our group size to a maximum of 16 so that we can move with agility, interact with local cultures, and enjoy every place we visit in-depth.
    <https://www.nationalgeographic.com>. Acesso em 02.mar.2019.
    Based on the text, one can infer that
    Escolha uma alternativa para a questão 96c7081c-c3
  • Linguagens

    Inglês

    Figura 1 de 5 da questão de Inglês, UECE 2011, Análise sintática | Syntax Parsing
    Figura 2 de 5 da questão de Inglês, UECE 2011, Análise sintática | Syntax Parsing
    Figura 3 de 5 da questão de Inglês, UECE 2011, Análise sintática | Syntax Parsing
    Figura 4 de 5 da questão de Inglês, UECE 2011, Análise sintática | Syntax Parsing
    Figura 5 de 5 da questão de Inglês, UECE 2011, Análise sintática | Syntax Parsing

    The sentences “This all sounds very innocent, but books for children can be a contentious issue.” and “Language, as much as history, is part of a national identity and cannot escape contemporary debates.” should be classified respectively as
    Escolha uma alternativa para a questão 96c737b0-a5
  • Matemática

    Matemática

    Um corredor organizou um plano de treinamento semanal, correndo 3 quilômetros na primeira semana; 3,5 quilômetros na segunda semana; 4,1 quilômetros na terceira semana, 4,8 quilômetros na quarta, e assim sucessivamente, acrescentando, semanalmente, 100 metros ao acréscimo já realizado na semana anterior. Esse atleta estipulou, também, que manteria esse padrão de aumento do treino até atingir distância de 32 quilômetros percorridos em uma mesma semana. Se o atleta praticar o treinamento estipulado corretamente em semanas consecutivas, pode-se afirmar que esse planejamento de treino só poderá ser executado em, exatamente,
    Escolha uma alternativa para a questão 96c73fb0-e6
  • Matemática

    Matemática

    Em uma seletiva para a final dos 100 metros livres de natação, numa olimpíada, os atletas, em suas respectivas raias, obtiveram os seguintes tempos:

    Imagem da questão de Matemática, ENEM 2015, Estatística


    A mediana dos tempos apresentados no quadro é 


    Escolha uma alternativa para a questão 96c7be22-7f
  • Linguagens

    Inglês

    School Sports Injuries: 9 Prevention Tips

    Reduce the risk of sports injuries with these essential guidelines.

    Sports medicine doctors offer these tips to help reduce the number of youth sports injuries:

    1. Warm-up and cool down properly. Warm-up exercises, such as stretching and light jogging, can help minimize the chance of muscle strain or other soft tissue injury and make the body’s tissues warmer and more flexible. Cooling down exercises loosen the body’s muscles that have tightened during exercise. Make warm-ups and cool downs part of your kids’ routine before and after sports participation.

    2. Know and abide by the rules of the sport. Kids should also be instructed in how to use the sport’s athletic equipment properly.

    3. Avoid playing when very tired or in pain. Children should take a break immediately if in pain.

    4. Be in proper physical condition to play the sport. Before starting a sport, have your child work out to prepare.

    5. Keep kids hydrated. Make sure there is adequate water or other liquids to maintain proper hydration. Kids need to drink 8 ounces of fluid every 20 minutes, plus more after playing.

    6. Wear appropriate protective gear, such as shin guards for soccer, a hard-shell helmet when facing a baseball or softball pitcher, a helmet and body padding for ice hockey. Make sure your child uses the proper protective gear for a particular sport. This may lessen the chances of being injured.

    7. Make sure the coach is certified. Enroll your child in organized sports through schools, community clubs, and recreation areas where there may be adults who are certified coaches. Ask about the coach’s background and training.

    8. Get a preseason physical examination. Kids should have a thorough exam from a physician before participating in sports, including a cardiovascular workup to make sure there are no pre-existing conditions.

    9. Insist on a team emergency plan. What happens if a child is injured? Where’s the first-aid kit? Who drives to the hospital? Make sure any injured child sees a doctor right away.

    Extracted from The Reader’s Digest, 2010.
    De acordo com o texto, todas as alternativas abaixo são verdadeiras, EXCETO:
    Escolha uma alternativa para a questão 96c82d19-af
  • Ciências da Natureza

    Física

    Quando uma fonte em movimento emite uma onda de menor velocidade de propagação do que sua própria velocidade, essa onda é chamada de “Onda de Mach” ou “Onda de Choque”. Exemplos dessas ondas são aquelas emitidas por um avião supersônico ou uma bala disparada ao ar.


    A figura a seguir, mostra um esquema das “Ondas de Mach” emitidas por uma fonte que se desloca, com velocidade v, ao longo da linha horizontal OB. Na figura, as circunferências são as interseções das “frentes de onda” esféricas, emitidas pela fonte, com o plano definido pelos pontos A, B e A’. Os pontos A’, 1’, 2’ e 3’ estão posicionados nas “frentes de onda”, geradas pela fonte quando a mesma passa, exatamente, pelas posições A, 1, 2 e 3, respectivamente. Além disso, as ondas se propagam com velocidade c. O segmento A’B é tangente, no ponto A’, à frente de onda emitida no ponto A, a qual demorou um tempo t para chegar nesse ponto. Porém, a fonte demorou o mesmo tempo para percorrer o segmento AB.

    Imagem da questão de Física, UFAC 2011, Ondas e Propriedades Ondulatórias

    Portanto, é possível concluir que:
    Escolha uma alternativa para a questão 96c9a82f-e4
  • Linguagens

    Inglês

    Miranda v. Arizona (1966)
    Ernesto Miranda, a Mexican immigrant living in Phoenix, Arizona, was identified in a police lineup by a woman, who accused him of kidnapping and raping her. Miranda was arrested and questioned by the police for two hours until he confessed to the crimes. During the interrogation, police did not tell Miranda about his Fifth Amendment protection against self-incrimination or his Sixth Amendment right to an attorney. The case went to trial in an Arizona state court and the prosecutor used the confession as evidence against Miranda, who was convicted and sentenced to 20 to 30 years in prison. Miranda's attorney appealed to the Arizona Supreme Court, which upheld the conviction. Then he appealed to the United States Supreme Court, which agreed to hear it along with four similar cases. The Supreme Court ruled 5-4 in favor of Miranda. This decision gave rise to what has become known as the Miranda Warning.
    <https://www.uscourts.gov>. Acesso em 10.jan.2019.

    According to the text,

    I. a fundamental right in US law has been named after a Mexican immigrant.
    II. Ernesto Miranda was innocent of the crimes he was accused of in 1966.
    III. the Supreme Court considered other cases when judging Miranda’s appeal.
    IV. Miranda confessed to his crimes and served a 20 to 30-year sentence.
    V. immigrants in the US are subject to the same laws as US citizens.

    Assinale a alternativa que contém somente afirmativas corretas.
    Escolha uma alternativa para a questão 96c9e709-c3
  • Matemática

    Matemática

    Um gesseiro que trabalhava na reforma de uma casa lidava com placas de gesso com formato de pentágono regular quando percebeu que uma peça estava quebrada, faltando uma parte triangular, conforme mostra a figura.


    Imagem da questão de Matemática, ENEM 2016, Polígonos


    Para recompor a peça, ele precisou refazer a parte triangular que faltava e, para isso, anotou as medidas dos ângulos x = EÂD, y = EDA e z = AÊD do triângulo ADE.


    As medidas x, y e z, em graus, desses ângulos são, respectivamente,

    Escolha uma alternativa para a questão 96ca6308-31
  • Linguagens

    Inglês

    School Sports Injuries: 9 Prevention Tips

    Reduce the risk of sports injuries with these essential guidelines.

    Sports medicine doctors offer these tips to help reduce the number of youth sports injuries:

    1. Warm-up and cool down properly. Warm-up exercises, such as stretching and light jogging, can help minimize the chance of muscle strain or other soft tissue injury and make the body’s tissues warmer and more flexible. Cooling down exercises loosen the body’s muscles that have tightened during exercise. Make warm-ups and cool downs part of your kids’ routine before and after sports participation.

    2. Know and abide by the rules of the sport. Kids should also be instructed in how to use the sport’s athletic equipment properly.

    3. Avoid playing when very tired or in pain. Children should take a break immediately if in pain.

    4. Be in proper physical condition to play the sport. Before starting a sport, have your child work out to prepare.

    5. Keep kids hydrated. Make sure there is adequate water or other liquids to maintain proper hydration. Kids need to drink 8 ounces of fluid every 20 minutes, plus more after playing.

    6. Wear appropriate protective gear, such as shin guards for soccer, a hard-shell helmet when facing a baseball or softball pitcher, a helmet and body padding for ice hockey. Make sure your child uses the proper protective gear for a particular sport. This may lessen the chances of being injured.

    7. Make sure the coach is certified. Enroll your child in organized sports through schools, community clubs, and recreation areas where there may be adults who are certified coaches. Ask about the coach’s background and training.

    8. Get a preseason physical examination. Kids should have a thorough exam from a physician before participating in sports, including a cardiovascular workup to make sure there are no pre-existing conditions.

    9. Insist on a team emergency plan. What happens if a child is injured? Where’s the first-aid kit? Who drives to the hospital? Make sure any injured child sees a doctor right away.

    Extracted from The Reader’s Digest, 2010.
    A frase “Make sure the coach is certified” poderia ser melhor substituída, neste contexto, por:
    Escolha uma alternativa para a questão 96cb5910-af