Pular para o conteúdo

Banco de questões

Todas as questões do ENEM

Use os filtros para chegar às questões que interessam. Cada resultado abre em uma página própria com enunciado, alternativas e gabarito.

  • 58.062 questões
  • 160 instituições
  • 23 anos de prova

Resultados: 58.062 questões

Página 2.437 de 2.904

  • Matemática

    Matemática

    No quadrado MNPQ, R é o ponto médio do lado PQ, S é um ponto do segmento NR tal que os segmentos MS e NR são perpendiculares. Se a medida do segmento MS é 3 cm, então a medida do lado do quadrado é
    Escolha uma alternativa para a questão d7967def-b8
  • Matemática

    Matemática

    A interseção das curvas representadas no plano, com o sistema cartesiano ortogonal usual,pelas equações x2 + y2 = 1 e │x│+│y│ = √2 é um conjunto
    Escolha uma alternativa para a questão d7991b3c-b8
  • Linguagens

    Inglês

        Remember the good old days, when you could have a heated-yet-enjoyable debate with your friends about things that didn’t matter that much — times when you could be a true fan of the Manchester United soccer team when you didn’t come from the city of Manchester?

        How things have changed.

        Now disagreements feel deadly serious. Like when your colleague pronounces that wearing a face mask in public is a threat to his liberty. Or when you see that one of your friends has just tweeted that, actually, all lives matter. Before you know it, you’re feeling angry and forming harsh new judgments about your colleagues and friends. Let’s take a collective pause and breathe: there are some ways we can all try to have more civil disagreements in this febrile age of culture wars.

    1. ‘Coupling’ and ‘decoupling’

        The first is to consider how inclined people are to ‘couple’ or ‘decouple’ topics involving wider political and social factors. Swedish data analyst John Nerst has used the terms to describe the contrasting ways in which people approach contentious issues. Those of us more inclined to ‘couple’ see them as inextricably related to a broader matrix of factors, whereas those more predisposed to ‘decouple’ prefer to consider an issue in isolation. To take a crude example, a decoupler might consider in isolation the question of whether a vaccine provides a degree of immunity to a virus; a coupler, by contrast, would immediately see the issue as inextricably entangled in a mesh of factors, such as pharmaceutical industry power and parental choice.

    2.____________________

        Most of us are deeply committed to our beliefs, especially concerning moral and social issues, such that when we’re presented with facts that contradict our beliefs, we often choose to dismiss those facts, rather than update our beliefs.

        A study at Arizona State University, U.S., analysed more than 100,000 comments on a forum where users post their views on an issue and invite others to persuade them to change their mind. The researchers found that regardless of the kind of topic, people were more likely to change their mind when confronted with more evidence-based arguments. “Our work may suggest that while attitude change is hard-won, providing facts, statistics and citations for one’s arguments can convince people to change their minds,” they concluded.

    3. Just be nicer?

        Finally, it’s easier said than done, but let’s all try to be more respectful of and attentive to each other’s positions. We should do this not just for virtuous reasons, but because the more we create that kind of a climate, the more open-minded and intellectually flexible we will all be inclined to be. And then hopefully, collectively, we can start having more constructive disagreements — even in our present very difficult times.

    (Christian Jarrett. www.bbc.com, 14.10.2020. Adaptado.)
    In the fragment from the fourth paragraph “Those of us more inclined to ‘couple’ see them as inextricably related to a broader matrix of factors”, the underlined term refers most specifically to
    Escolha uma alternativa para a questão d7994fc4-72
  • Linguagens

    Português

    Leia o TEXTO 1 e responda à questão. 

    TEXTO 1 

    Figura 1 de 5 da questão de Português, IFN-MG 2016, Coesão e coerência

    Figura 2 de 5 da questão de Português, IFN-MG 2016, Coesão e coerência

    Figura 3 de 5 da questão de Português, IFN-MG 2016, Coesão e coerência

    Figura 4 de 5 da questão de Português, IFN-MG 2016, Coesão e coerência

    Figura 5 de 5 da questão de Português, IFN-MG 2016, Coesão e coerência

    André Felipe Portugal é advogado e mestrando em Direito Constitucional pela Universidade de Coimbra (Portugal). 

    PORTUGAL, André Felipe. Não ao pensamento único. Disponível em:<http://www.gazetadopovo.com.br/opiniao/artigos/nao-ao-pensamento-unico-8n51aku1uc9ghd632l0zsrcqg>Acesso em: 10 jun. 2016 (Adaptado)

    “a minha interpretação ou perspectiva não é única, e é bem possível que ela nem sequer seja a melhor dentre as existentes. Há outras que podem ser igualmente válidas, com as quais posso aprender alguma coisa. Também é possível que eu discorde delas, mas isso não significará, necessariamente, que elas são erradas ou menos válidas do que a minha [...]”. (linhas 29–34)

    No trecho acima, observamos a utilização de mecanismos linguísticos que permitiram a sequência lógico-semântica entre as partes do texto, isto é, funcionaram para estabelecer a coesão textual. Observando a utilização desses conectores, marque a opção correta.
    Escolha uma alternativa para a questão d79bb5ab-b7
  • Ciências da Natureza

    Biologia

          Apesar de belos e impressionantes, corais exóticos encontrados na Ilha Grande podem ser uma ameaça ao equilíbrio dos ecossistemas do litoral do Rio de Janeiro. Originários do Oceano Pacífico, esses organismos foram trazidos por plataformas de petróleo e outras embarcações, provavelmente na década de 1980, e disputam com as espécies nativas elementos primordiais para a sobrevivência, como espaço e alimento. Organismos invasores são a segunda maior causa de perda de biodiversidade, superados somente pela destruição direta de habitats pela ação do homem. As populações de espécies invasoras crescem indefinidamente e ocupam o espaço de organismos nativos.

    LEVY, I. Disponível em: http://cienciahoje.uol.com.br. Acesso em: 5 dez, 2011 (adaptado).

    As populações de espécies invasoras crescem bastante por terem a vantagem de

    Escolha uma alternativa para a questão d79e834c-96
  • Linguagens

    Inglês

        Remember the good old days, when you could have a heated-yet-enjoyable debate with your friends about things that didn’t matter that much — times when you could be a true fan of the Manchester United soccer team when you didn’t come from the city of Manchester?

        How things have changed.

        Now disagreements feel deadly serious. Like when your colleague pronounces that wearing a face mask in public is a threat to his liberty. Or when you see that one of your friends has just tweeted that, actually, all lives matter. Before you know it, you’re feeling angry and forming harsh new judgments about your colleagues and friends. Let’s take a collective pause and breathe: there are some ways we can all try to have more civil disagreements in this febrile age of culture wars.

    1. ‘Coupling’ and ‘decoupling’

        The first is to consider how inclined people are to ‘couple’ or ‘decouple’ topics involving wider political and social factors. Swedish data analyst John Nerst has used the terms to describe the contrasting ways in which people approach contentious issues. Those of us more inclined to ‘couple’ see them as inextricably related to a broader matrix of factors, whereas those more predisposed to ‘decouple’ prefer to consider an issue in isolation. To take a crude example, a decoupler might consider in isolation the question of whether a vaccine provides a degree of immunity to a virus; a coupler, by contrast, would immediately see the issue as inextricably entangled in a mesh of factors, such as pharmaceutical industry power and parental choice.

    2.____________________

        Most of us are deeply committed to our beliefs, especially concerning moral and social issues, such that when we’re presented with facts that contradict our beliefs, we often choose to dismiss those facts, rather than update our beliefs.

        A study at Arizona State University, U.S., analysed more than 100,000 comments on a forum where users post their views on an issue and invite others to persuade them to change their mind. The researchers found that regardless of the kind of topic, people were more likely to change their mind when confronted with more evidence-based arguments. “Our work may suggest that while attitude change is hard-won, providing facts, statistics and citations for one’s arguments can convince people to change their minds,” they concluded.

    3. Just be nicer?

        Finally, it’s easier said than done, but let’s all try to be more respectful of and attentive to each other’s positions. We should do this not just for virtuous reasons, but because the more we create that kind of a climate, the more open-minded and intellectually flexible we will all be inclined to be. And then hopefully, collectively, we can start having more constructive disagreements — even in our present very difficult times.

    (Christian Jarrett. www.bbc.com, 14.10.2020. Adaptado.)
    No trecho do quarto parágrafo “whereas those more predisposed to ‘decouple’ prefer to consider an issue in isolation”, o termo sublinhado introduz
    Escolha uma alternativa para a questão d79ee807-72
  • Ciências da Natureza

    Física

    Uma partícula P, de massa m, está presa na periferia de um disco que gira com velocidade angular constante em torno de um eixo horizontal que passa pelo seu centro. Considere esse sistema próximo à superfície terrestre. Sobre o módulo da força resultante que atua na partícula, é correto afirmar que
    Escolha uma alternativa para a questão d7a1acb9-a6
  • Linguagens

    Português

    Leia o TEXTO 3 e responda à questão.

    TEXTO 3 

    Imagem da questão de Português, IFN-MG 2016, Funções da Linguagem: emotiva, apelativa, referencial, metalinguística, fática e poética.

    Intolerância religiosa é crime de ódio e fere a dignidade. O direito de criticar dogmas e encaminhamentos é assegurado como liberdade de expressão, mas atitudes agressivas, ofensas e tratamento diferenciado a alguém, em função de crença ou de não ter religião, são crimes inafiançáveis e imprescritíveis. 


    Disponível em: <http://juventudeespirita.tumblr.com/post/96974768531/intoler%C3%A2ncia-religiosa-

    %C3%A9-crime-de-%C3%B3dio-e-fere-a>  . Acesso em: 24 ago. 2016 

    Nas campanhas comunitárias, ou publicitárias, é comum o predomínio da função conativa da linguagem. No TEXTO 3, pode-se observar que:
    Escolha uma alternativa para a questão d7a24c43-b7
  • Linguagens

    Inglês

        Remember the good old days, when you could have a heated-yet-enjoyable debate with your friends about things that didn’t matter that much — times when you could be a true fan of the Manchester United soccer team when you didn’t come from the city of Manchester?

        How things have changed.

        Now disagreements feel deadly serious. Like when your colleague pronounces that wearing a face mask in public is a threat to his liberty. Or when you see that one of your friends has just tweeted that, actually, all lives matter. Before you know it, you’re feeling angry and forming harsh new judgments about your colleagues and friends. Let’s take a collective pause and breathe: there are some ways we can all try to have more civil disagreements in this febrile age of culture wars.

    1. ‘Coupling’ and ‘decoupling’

        The first is to consider how inclined people are to ‘couple’ or ‘decouple’ topics involving wider political and social factors. Swedish data analyst John Nerst has used the terms to describe the contrasting ways in which people approach contentious issues. Those of us more inclined to ‘couple’ see them as inextricably related to a broader matrix of factors, whereas those more predisposed to ‘decouple’ prefer to consider an issue in isolation. To take a crude example, a decoupler might consider in isolation the question of whether a vaccine provides a degree of immunity to a virus; a coupler, by contrast, would immediately see the issue as inextricably entangled in a mesh of factors, such as pharmaceutical industry power and parental choice.

    2.____________________

        Most of us are deeply committed to our beliefs, especially concerning moral and social issues, such that when we’re presented with facts that contradict our beliefs, we often choose to dismiss those facts, rather than update our beliefs.

        A study at Arizona State University, U.S., analysed more than 100,000 comments on a forum where users post their views on an issue and invite others to persuade them to change their mind. The researchers found that regardless of the kind of topic, people were more likely to change their mind when confronted with more evidence-based arguments. “Our work may suggest that while attitude change is hard-won, providing facts, statistics and citations for one’s arguments can convince people to change their minds,” they concluded.

    3. Just be nicer?

        Finally, it’s easier said than done, but let’s all try to be more respectful of and attentive to each other’s positions. We should do this not just for virtuous reasons, but because the more we create that kind of a climate, the more open-minded and intellectually flexible we will all be inclined to be. And then hopefully, collectively, we can start having more constructive disagreements — even in our present very difficult times.

    (Christian Jarrett. www.bbc.com, 14.10.2020. Adaptado.)
    The subtitle that most closely represents the content of the fifth and sixth paragraphs is:
    Escolha uma alternativa para a questão d7a3be58-72
  • Ciências Humanas

    Geografia

    O termo smog se forma pela junção das palavras smoke (fumo) e fog (neblina). Ele designa o resultado da mistura de um processo natural (a neblina) com os fumos produzidos pela atividade industrial e queima de combustíveis fósseis, originando um tipo de nevoeiro que pode ser altamente tóxico. Esse fenômeno afeta principalmente as metrópoles, como São Paulo, detentora de 30% da frota de automóveis no Brasil. Um fato interessante ocorreu em 2018, com a greve dos caminhoneiros: a poluição caiu pela metade, segundo a Cetesb. Com a falta de combustíveis, houve menor circulação de carros na capital; além disso, a greve teve impacto na produção industrial, pela falta de insumos e de pessoal. Especialistas esperam que essa situação atípica na cidade leve à criação de políticas públicas voltadas à diminuição da poluição atmosférica.

    Imagem da questão de Geografia, UNICAMP 2019, Clima
    (Fonte: Estação Meteorológica São Paulo (Mirante de Santana) – A701 – INMET, 2018.)

    Considerando que houve redução de smog na cidade de São Paulo durante a greve dos caminhoneiros e levando em conta as condições climáticas descritas no gráfico, infere-se que ocorreu maior redução do


    Escolha uma alternativa para a questão d7a43b58-c2
  • Linguagens

    Português

    Imagem da questão de Português, UNIFESP 2005, Interpretação de Textos De acordo com o texto, a caligrafia dos médicos
    Escolha uma alternativa para a questão d7a53a5c-29
  • Linguagens

    Português

    Leia o TEXTO 3 e responda à questão.

    TEXTO 3 

    Imagem da questão de Português, IFN-MG 2016, Adjetivos

    Intolerância religiosa é crime de ódio e fere a dignidade. O direito de criticar dogmas e encaminhamentos é assegurado como liberdade de expressão, mas atitudes agressivas, ofensas e tratamento diferenciado a alguém, em função de crença ou de não ter religião, são crimes inafiançáveis e imprescritíveis. 


    Disponível em: <http://juventudeespirita.tumblr.com/post/96974768531/intoler%C3%A2ncia-religiosa-

    %C3%A9-crime-de-%C3%B3dio-e-fere-a>  . Acesso em: 24 ago. 2016 

    Sobre o efeito semântico de empregos linguísticos e/ou sinonímia das palavras utilizadas no TEXTO 3, é correto afirmar que:
    Escolha uma alternativa para a questão d7a68d1e-b7
  • Ciências da Natureza

    Física

    Nas questões seguintes, sempre que necessário, use aceleração da gravidade g = 10 m/s2 , aproxime  = 3,0 e 1 atm =105 Pa.

    O físico inglês Stephen Hawking (1942-2018), além de suas contribuições importantes para a cosmologia, a física teórica e sobre a origem do universo, nos últimos anos de sua vida passou a sugerir estratégias para salvar a raça humana de uma possível extinção, entre elas, a mudança para outro planeta. Em abril de 2018, uma empresa americana, em colaboração com a Nasa, lançou o satélite TESS, que analisará cerca de vinte mil planetas fora do sistema solar. Esses planetas orbitam estrelas situadas a menos de trezentos anos-luz da Terra, sendo que um anoluz é a distância que a luz percorre no vácuo em um ano.

    Considere um ônibus espacial atual que viaja a uma velocidade média v = 2,0 x 104 km/s . O tempo que esse ônibus levaria para chegar a um planeta a uma distância de 100 anos-luz é igual a

    (Dado: A velocidade da luz no vácuo é igual a c = 3,0 108 m/s .)

    Escolha uma alternativa para a questão d7a818c0-c2
  • Linguagens

    Inglês

        Remember the good old days, when you could have a heated-yet-enjoyable debate with your friends about things that didn’t matter that much — times when you could be a true fan of the Manchester United soccer team when you didn’t come from the city of Manchester?

        How things have changed.

        Now disagreements feel deadly serious. Like when your colleague pronounces that wearing a face mask in public is a threat to his liberty. Or when you see that one of your friends has just tweeted that, actually, all lives matter. Before you know it, you’re feeling angry and forming harsh new judgments about your colleagues and friends. Let’s take a collective pause and breathe: there are some ways we can all try to have more civil disagreements in this febrile age of culture wars.

    1. ‘Coupling’ and ‘decoupling’

        The first is to consider how inclined people are to ‘couple’ or ‘decouple’ topics involving wider political and social factors. Swedish data analyst John Nerst has used the terms to describe the contrasting ways in which people approach contentious issues. Those of us more inclined to ‘couple’ see them as inextricably related to a broader matrix of factors, whereas those more predisposed to ‘decouple’ prefer to consider an issue in isolation. To take a crude example, a decoupler might consider in isolation the question of whether a vaccine provides a degree of immunity to a virus; a coupler, by contrast, would immediately see the issue as inextricably entangled in a mesh of factors, such as pharmaceutical industry power and parental choice.

    2.____________________

        Most of us are deeply committed to our beliefs, especially concerning moral and social issues, such that when we’re presented with facts that contradict our beliefs, we often choose to dismiss those facts, rather than update our beliefs.

        A study at Arizona State University, U.S., analysed more than 100,000 comments on a forum where users post their views on an issue and invite others to persuade them to change their mind. The researchers found that regardless of the kind of topic, people were more likely to change their mind when confronted with more evidence-based arguments. “Our work may suggest that while attitude change is hard-won, providing facts, statistics and citations for one’s arguments can convince people to change their minds,” they concluded.

    3. Just be nicer?

        Finally, it’s easier said than done, but let’s all try to be more respectful of and attentive to each other’s positions. We should do this not just for virtuous reasons, but because the more we create that kind of a climate, the more open-minded and intellectually flexible we will all be inclined to be. And then hopefully, collectively, we can start having more constructive disagreements — even in our present very difficult times.

    (Christian Jarrett. www.bbc.com, 14.10.2020. Adaptado.)
    No trecho do último parágrafo “we will all be inclined to be”, o termo sublinhado indica uma
    Escolha uma alternativa para a questão d7a84ae7-72
  • Ciências da Natureza

    Física

    Uma prensa hidráulica rudimentar foi construída por um agricultor para compactar fardo de algodão. Por meio de uma alavanca, o agricultor exerce uma força de intensidade igual a100,0N no êmbolo menor de área igual a 200,0cm2, e o fardo é prensado por meio de um êmbolo de área cinco vezes maior.


    Nessas condições, a intensidade da força exercida sobre um fardo na sua prensagem é igual, em newtons, a

    Escolha uma alternativa para a questão d7a9d6d6-ff
  • Ciências da Natureza

    Física

    Nas questões seguintes, sempre que necessário, use aceleração da gravidade g = 10 m/s2 , aproxime  = 3,0 e 1 atm =105 Pa.
    Em uma pescaria é utilizada uma linha com boia e anzol. Inicialmente, na posição de espera, a linha acima da boia mantém-se frouxa e a boia flutua, ficando com 1/3 do seu volume submerso (figura 1). Quando o peixe é fisgado, a boia é puxada, ficando totalmente submersa e momentaneamente parada; simultaneamente, a linha que a une ao anzol fica esticada verticalmente (figura 2). A parte superior da linha, acima da boia, mantém-se frouxa. Nessa situação, quanto vale o módulo da tensão da linha que une a boia ao anzol? Despreze as massas da linha e do anzol, bem como o atrito viscoso com a água.

    Imagem da questão de Física, UNICAMP 2019, Estática e Hidrostática



    Escolha uma alternativa para a questão d7aba43d-c2
  • Ciências da Natureza

    Física

    A teoria cinética dos gases apresenta um modelo microscópico para o gás ideal.


    De acordo com essa teoria, as moléculas de um gás

    Escolha uma alternativa para a questão d7acbf8a-ff
  • Linguagens

    Inglês

        Remember the good old days, when you could have a heated-yet-enjoyable debate with your friends about things that didn’t matter that much — times when you could be a true fan of the Manchester United soccer team when you didn’t come from the city of Manchester?

        How things have changed.

        Now disagreements feel deadly serious. Like when your colleague pronounces that wearing a face mask in public is a threat to his liberty. Or when you see that one of your friends has just tweeted that, actually, all lives matter. Before you know it, you’re feeling angry and forming harsh new judgments about your colleagues and friends. Let’s take a collective pause and breathe: there are some ways we can all try to have more civil disagreements in this febrile age of culture wars.

    1. ‘Coupling’ and ‘decoupling’

        The first is to consider how inclined people are to ‘couple’ or ‘decouple’ topics involving wider political and social factors. Swedish data analyst John Nerst has used the terms to describe the contrasting ways in which people approach contentious issues. Those of us more inclined to ‘couple’ see them as inextricably related to a broader matrix of factors, whereas those more predisposed to ‘decouple’ prefer to consider an issue in isolation. To take a crude example, a decoupler might consider in isolation the question of whether a vaccine provides a degree of immunity to a virus; a coupler, by contrast, would immediately see the issue as inextricably entangled in a mesh of factors, such as pharmaceutical industry power and parental choice.

    2.____________________

        Most of us are deeply committed to our beliefs, especially concerning moral and social issues, such that when we’re presented with facts that contradict our beliefs, we often choose to dismiss those facts, rather than update our beliefs.

        A study at Arizona State University, U.S., analysed more than 100,000 comments on a forum where users post their views on an issue and invite others to persuade them to change their mind. The researchers found that regardless of the kind of topic, people were more likely to change their mind when confronted with more evidence-based arguments. “Our work may suggest that while attitude change is hard-won, providing facts, statistics and citations for one’s arguments can convince people to change their minds,” they concluded.

    3. Just be nicer?

        Finally, it’s easier said than done, but let’s all try to be more respectful of and attentive to each other’s positions. We should do this not just for virtuous reasons, but because the more we create that kind of a climate, the more open-minded and intellectually flexible we will all be inclined to be. And then hopefully, collectively, we can start having more constructive disagreements — even in our present very difficult times.

    (Christian Jarrett. www.bbc.com, 14.10.2020. Adaptado.)
    It is an explicit opinion by the author of the text:
    Escolha uma alternativa para a questão d7ad1735-72