Questões do ENEM: Universidade Regional do Cariri (URCA)

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

Resultados

646 questões encontradas. Mostrando a página 20 de 33.

  • 0D5BCB26-C9

    Física

    Cargas Elétricas e Eletrização
    URCA · 2019MédioEntre para guardar nos favoritos
    O fenômeno da eletrização é bastante perceptível no nosso dia-a-dia (eletrização por atrito, contato, indução). Passagens de cargas elétricas podem ser sentidas quando cargas são transferidas para o nosso corpo. É preciso uma formação científica básica de todos sobre os fenômenos elétricos principalmente para lidarmos seguramente com os dispositivos elétricos do cotidiano. Especificamente em relação à eletrostática escolha a alternativa aceitável cientificamente:
    Escolha uma alternativa para a questão 0d5bcb26-c9
  • 0D58F3F4-C9

    Física

    Reflexão
    URCA · 2019DifícilEntre para guardar nos favoritos
    Considerando a Terra como uma esfera perfeita e, sabendo que nas suas proximidades, mais precisamente sobre a superfície da Terra, percebemos a mesma como plana e, se olharmos na superfície de um lago sem nenhuma turbulência, aqui na superfície da Terra, observamos que a distância da nossa imagem que é formada no lago é igual a nossa distância em relação à superfície do lago. Mas, isso é uma consequência da nossa pequena ordem de grandeza comparada à ordem de grandeza da Terra, que em relação à nossa é estupidamente grande. Considerando o raio da Terra é de RT = 6,4 X 106 m e que a distância da Lua é H = 3,8 x 108 m (reflita: nessa distância a superfície da Terra ainda pode ser considerada plana?). Marque a alternativa que corresponde à distância da imagem da Lua, refletida no mesmo lago, em relação à superfície do lago.
    Escolha uma alternativa para a questão 0d58f3f4-c9
  • 0D561F58-C9

    Física

    2ª Lei da Termodinâmica - Ciclo de Carnot e Máquinas Térmicas
    URCA · 2019FácilEntre para guardar nos favoritos
    A moto é um meio de transporte cada vez mais preferível pela população da região do cariri cearense (apesar de seus riscos), principalmente por ser considerada mais econômica em ralação ao consumo de combustíveis fósseis como a gasolina. Em relação à explicação científica no campo da Termodinâmica sobre o funcionamento de um motor de combustão interna da moto marque a alternativa aceita na linguagem científica:
    Escolha uma alternativa para a questão 0d561f58-c9
  • 0D5341E1-C9

    Física

    Calor Latente
    URCA · 2019MédioEntre para guardar nos favoritos
    O calor latente de fusão da água é 333 kj/kg. Sabendo que o ponto de fusão da água ocorre aproximadamente a 273 K. Determine a quantidade de calor necessário para derreter 500g de água a 0°c sabendo que 1 cal = 4,2 J. Marque a opção que melhor fornece esse valor.
    Escolha uma alternativa para a questão 0d5341e1-c9
  • 0D504C4C-C9

    Física

    Movimento Harmônico
    URCA · 2019MédioEntre para guardar nos favoritos
    O pêndulo foi um instrumento útil para a fabricação de relógio de pêndulo. Ainda é usado para estimar a gravidade local. A expressão que descreve o período pendular, nesse caso, é T = 2π L/g . Onde T é o período, L é o comprimento do pêndulo e g é a gravidade local. Sabe-se então que, deslocando-se o pêndulo de pequenos ângulos, a sua oscilação é dada em período constante. Essa propriedade foi muito útil para a construção de relógios de pêndulo. Pegamos dois pêndulos simples um com o comprimento L/2 e período T2, outro com o comprimento 2L e período T3. Colocamos esses pêndulos para oscilar e medimos os seus períodos. Marque a alternativa que dá a relação do período do pêndulo 2 com período do pêndulo 3, ou seja, T2/T3
    Escolha uma alternativa para a questão 0d504c4c-c9
  • 0D4D5B1F-C9

    Física

    Dinâmica
    URCA · 2019FácilEntre para guardar nos favoritos
    Um brinquedo já conhecido há muito tempo é um "carrinho" construído com carretel de linha, vela, liga de dinheiro e um palito de churrasco. O artefato pode auxiliar o professor a discutir conceitos importantes no campo da cinemática. Suponha que o palito de churrasco tenha um comprimento de 12 cm, medindo 8 cm da ponta até a liga e 4 cm da liga até a outra extremidade. Naturalmente, depois de girar o palito, a liga que o sustenta sofre uma torção acumulando energia potencial elástica. Ao abandoná-lo, ele faz um giro circular e lento cujo tempo médio pode ser medido. A respeito do movimento de giro do palito, pode-se afirmar que:

    Imagem da questão de Física, da prova de 2019
    Escolha uma alternativa para a questão 0d4d5b1f-c9
  • 0D4A08E6-C9

    Física

    Cinemática
    URCA · 2019FácilEntre para guardar nos favoritos
    Um estudante prende um corpo de massa m = 300 gramas a um fio de massa desprezível a uma de suas extremidades, passando o fio por dento de um cano fino e sem atrito entre o fio e o cano (veja a figura abaixo). O estudante também amarra a outra extremidade a outro corpo de maior massa, portanto mais pesado. O estudante faz a menor massa girar com um raio de um metro de comprimento (r = 1,00m) e velocidade angular igual a 5,77 rad/s (ω = 5,77 rad/s). Se o corpo mais pesado é equilibrado por esse movimento provocado pelo estudante, assim marque a opção que fornece o valor aproximado da massa M do corpo mais pesado:

    Imagem da questão de Física, da prova de 2019


    Escolha uma alternativa para a questão 0d4a08e6-c9
  • 0D46FC0E-C9

    Física

    Dinâmica
    URCA · 2019DifícilEntre para guardar nos favoritos
    Um avião viajando com velocidade constante recebe uma força de atito do ar Imagem da questão de Física, da prova de 2019 contrária ao seu movimento. A força peso do avião Imagem da questão de Física, da prova de 2019 é equilibrada pela força de pressão que o ar exerce sobre o mesmo Imagem da questão de Física, da prova de 2019 . Dessa forma a aeronave segue em linha reta até o ponto em que o piloto se prepara e começa a aterrisagem. Indique a alternativa que tem a(s) lei(s) que justificam o movimento constante do avião até antes de começar o pouso:
    Escolha uma alternativa para a questão 0d46fc0e-c9
  • 0D42767F-C9

    Física

    Cinemática
    URCA · 2019MédioEntre para guardar nos favoritos
    O exercício físico como caminhadas, corridas são muito recomendados pelos médicos para uma vida mais saudável. Examinando um pouco de física por trás deste esporte os autores de livros didáticos de física, Antônio Máximo e Beatriz Alvarenga, formularam o seguinte problema: observe o gráfico abaixo que mostra informações sobre o movimento de dois atletas (atleta A e atleta B). No tempo t = 0 os atletas encontram-se um ao lado do outro, na mesma posição da pista de corrida.

    Escolha a alternativa que não representa corretamente o movimento.

    Imagem da questão de Física, da prova de 2019

    Escolha uma alternativa para a questão 0d42767f-c9
  • 6CB8BF46-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017DifícilEntre para guardar nos favoritos

    Which recipe is an example of a vegan dish?

    Escolha uma alternativa para a questão 6cb8bf46-ff
  • 6CB50E88-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017MédioEntre para guardar nos favoritos
    According to the strip from Question 12, we can conclude that:
    Escolha uma alternativa para a questão 6cb50e88-ff
  • 6CAD4058-FF

    Inglês

    Formação de palavras (prefixos e sufixos) | Word formation (prefix and suffix)
    URCA · 2017FácilEntre para guardar nos favoritos

    IS A VEGAN DIET HEALTHY?


    By Mary Lynch


        As a registered nutritionist, the question “Is the vegan diet healthy?” is one I get all the time, especially at this time of year.

        Frustratingly, the answer is that it depends as much on what you eat as with any other diet. Someone living purely on ready salted crisps or chips, for example, would be technically following a vegan diet, but it would in no way be healthy.

        However, research shows that there are potential benefits to a vegan diet. A recent study indicated that the average vegan diet is higher in vitamin C and fibre, and lower in saturated fat than one containing meat. In addition, statistics show that vegans have a lower BMI (height-to-weight ratio) than meat eaters – in other words, they are skinnier.

        You see, a diet without any meat or dairy products is likely to contain a lot less saturated fat, which is related to increased cholesterol levels and increased risk of heart disease. We also know that fat contains more calories per gram than other foods, and so vegans may consume fewer calories as a result. Finally, a vegan diet is generally thought to contain more cereals, fruits, vegetables, nuts and seeds than a non¬vegan diet.

        Sounds   great   right?   Not   quite.   In   terms   of   micronutrients,   a   vegan   diet   is   actually   more susceptible to being nutritionally poor. A vegan diet is naturally low in calcium, vitamin D, iron, vitamin B12, zinc and omega-3 fatty acids. Therefore, if you follow a vegan diet it is essential that you get enough of these nutrients through specific vegan food sources – and may even need to take additional supplements. We have many recipes suitable for vegans that can help, just check out our vegan section. In our features we also have this traditional hummus recipe, which contains tahini – a good source of calcium, zinc and iron, which are all micronutrients hard to get a hold of on a vegan diet.

        So there you have it: going vegan does not necessarily mean you are going to be healthier. In fact, I think that much of the improvement in diets among vegans is a result of education rather than going meat free. In other words, if someone chooses to go vegan they are more likely to care about what they are eating and therefore are more likely to educate themselves on the types of foods they should and should not be eating.


    From: https://goo.gl/AwDYY7. Accessed on 03/22/2017.

    The suffix –y in the words healthy (1st paragraph) and fatty (5th paragraph) gives the idea of:

    Escolha uma alternativa para a questão 6cad4058-ff
  • 6CAA4A27-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017MédioEntre para guardar nos favoritos

    IS A VEGAN DIET HEALTHY?


    By Mary Lynch


        As a registered nutritionist, the question “Is the vegan diet healthy?” is one I get all the time, especially at this time of year.

        Frustratingly, the answer is that it depends as much on what you eat as with any other diet. Someone living purely on ready salted crisps or chips, for example, would be technically following a vegan diet, but it would in no way be healthy.

        However, research shows that there are potential benefits to a vegan diet. A recent study indicated that the average vegan diet is higher in vitamin C and fibre, and lower in saturated fat than one containing meat. In addition, statistics show that vegans have a lower BMI (height-to-weight ratio) than meat eaters – in other words, they are skinnier.

        You see, a diet without any meat or dairy products is likely to contain a lot less saturated fat, which is related to increased cholesterol levels and increased risk of heart disease. We also know that fat contains more calories per gram than other foods, and so vegans may consume fewer calories as a result. Finally, a vegan diet is generally thought to contain more cereals, fruits, vegetables, nuts and seeds than a non¬vegan diet.

        Sounds   great   right?   Not   quite.   In   terms   of   micronutrients,   a   vegan   diet   is   actually   more susceptible to being nutritionally poor. A vegan diet is naturally low in calcium, vitamin D, iron, vitamin B12, zinc and omega-3 fatty acids. Therefore, if you follow a vegan diet it is essential that you get enough of these nutrients through specific vegan food sources – and may even need to take additional supplements. We have many recipes suitable for vegans that can help, just check out our vegan section. In our features we also have this traditional hummus recipe, which contains tahini – a good source of calcium, zinc and iron, which are all micronutrients hard to get a hold of on a vegan diet.

        So there you have it: going vegan does not necessarily mean you are going to be healthier. In fact, I think that much of the improvement in diets among vegans is a result of education rather than going meat free. In other words, if someone chooses to go vegan they are more likely to care about what they are eating and therefore are more likely to educate themselves on the types of foods they should and should not be eating.


    From: https://goo.gl/AwDYY7. Accessed on 03/22/2017.

    According to the text, people who follow a vegan diet:
    Escolha uma alternativa para a questão 6caa4a27-ff
  • 6CA76B17-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017FácilEntre para guardar nos favoritos

    IS A VEGAN DIET HEALTHY?


    By Mary Lynch


        As a registered nutritionist, the question “Is the vegan diet healthy?” is one I get all the time, especially at this time of year.

        Frustratingly, the answer is that it depends as much on what you eat as with any other diet. Someone living purely on ready salted crisps or chips, for example, would be technically following a vegan diet, but it would in no way be healthy.

        However, research shows that there are potential benefits to a vegan diet. A recent study indicated that the average vegan diet is higher in vitamin C and fibre, and lower in saturated fat than one containing meat. In addition, statistics show that vegans have a lower BMI (height-to-weight ratio) than meat eaters – in other words, they are skinnier.

        You see, a diet without any meat or dairy products is likely to contain a lot less saturated fat, which is related to increased cholesterol levels and increased risk of heart disease. We also know that fat contains more calories per gram than other foods, and so vegans may consume fewer calories as a result. Finally, a vegan diet is generally thought to contain more cereals, fruits, vegetables, nuts and seeds than a non¬vegan diet.

        Sounds   great   right?   Not   quite.   In   terms   of   micronutrients,   a   vegan   diet   is   actually   more susceptible to being nutritionally poor. A vegan diet is naturally low in calcium, vitamin D, iron, vitamin B12, zinc and omega-3 fatty acids. Therefore, if you follow a vegan diet it is essential that you get enough of these nutrients through specific vegan food sources – and may even need to take additional supplements. We have many recipes suitable for vegans that can help, just check out our vegan section. In our features we also have this traditional hummus recipe, which contains tahini – a good source of calcium, zinc and iron, which are all micronutrients hard to get a hold of on a vegan diet.

        So there you have it: going vegan does not necessarily mean you are going to be healthier. In fact, I think that much of the improvement in diets among vegans is a result of education rather than going meat free. In other words, if someone chooses to go vegan they are more likely to care about what they are eating and therefore are more likely to educate themselves on the types of foods they should and should not be eating.


    From: https://goo.gl/AwDYY7. Accessed on 03/22/2017.

    What is the alert the text makes about a vegan diet?
    Escolha uma alternativa para a questão 6ca76b17-ff
  • 6CA420CA-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017FácilEntre para guardar nos favoritos

    IS A VEGAN DIET HEALTHY?


    By Mary Lynch


        As a registered nutritionist, the question “Is the vegan diet healthy?” is one I get all the time, especially at this time of year.

        Frustratingly, the answer is that it depends as much on what you eat as with any other diet. Someone living purely on ready salted crisps or chips, for example, would be technically following a vegan diet, but it would in no way be healthy.

        However, research shows that there are potential benefits to a vegan diet. A recent study indicated that the average vegan diet is higher in vitamin C and fibre, and lower in saturated fat than one containing meat. In addition, statistics show that vegans have a lower BMI (height-to-weight ratio) than meat eaters – in other words, they are skinnier.

        You see, a diet without any meat or dairy products is likely to contain a lot less saturated fat, which is related to increased cholesterol levels and increased risk of heart disease. We also know that fat contains more calories per gram than other foods, and so vegans may consume fewer calories as a result. Finally, a vegan diet is generally thought to contain more cereals, fruits, vegetables, nuts and seeds than a non¬vegan diet.

        Sounds   great   right?   Not   quite.   In   terms   of   micronutrients,   a   vegan   diet   is   actually   more susceptible to being nutritionally poor. A vegan diet is naturally low in calcium, vitamin D, iron, vitamin B12, zinc and omega-3 fatty acids. Therefore, if you follow a vegan diet it is essential that you get enough of these nutrients through specific vegan food sources – and may even need to take additional supplements. We have many recipes suitable for vegans that can help, just check out our vegan section. In our features we also have this traditional hummus recipe, which contains tahini – a good source of calcium, zinc and iron, which are all micronutrients hard to get a hold of on a vegan diet.

        So there you have it: going vegan does not necessarily mean you are going to be healthier. In fact, I think that much of the improvement in diets among vegans is a result of education rather than going meat free. In other words, if someone chooses to go vegan they are more likely to care about what they are eating and therefore are more likely to educate themselves on the types of foods they should and should not be eating.


    From: https://goo.gl/AwDYY7. Accessed on 03/22/2017.

    According to the text, meat and dairy products:
    Escolha uma alternativa para a questão 6ca420ca-ff
  • 6C9E30BE-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017FácilEntre para guardar nos favoritos

    IS A VEGAN DIET HEALTHY?


    By Mary Lynch


        As a registered nutritionist, the question “Is the vegan diet healthy?” is one I get all the time, especially at this time of year.

        Frustratingly, the answer is that it depends as much on what you eat as with any other diet. Someone living purely on ready salted crisps or chips, for example, would be technically following a vegan diet, but it would in no way be healthy.

        However, research shows that there are potential benefits to a vegan diet. A recent study indicated that the average vegan diet is higher in vitamin C and fibre, and lower in saturated fat than one containing meat. In addition, statistics show that vegans have a lower BMI (height-to-weight ratio) than meat eaters – in other words, they are skinnier.

        You see, a diet without any meat or dairy products is likely to contain a lot less saturated fat, which is related to increased cholesterol levels and increased risk of heart disease. We also know that fat contains more calories per gram than other foods, and so vegans may consume fewer calories as a result. Finally, a vegan diet is generally thought to contain more cereals, fruits, vegetables, nuts and seeds than a non¬vegan diet.

        Sounds   great   right?   Not   quite.   In   terms   of   micronutrients,   a   vegan   diet   is   actually   more susceptible to being nutritionally poor. A vegan diet is naturally low in calcium, vitamin D, iron, vitamin B12, zinc and omega-3 fatty acids. Therefore, if you follow a vegan diet it is essential that you get enough of these nutrients through specific vegan food sources – and may even need to take additional supplements. We have many recipes suitable for vegans that can help, just check out our vegan section. In our features we also have this traditional hummus recipe, which contains tahini – a good source of calcium, zinc and iron, which are all micronutrients hard to get a hold of on a vegan diet.

        So there you have it: going vegan does not necessarily mean you are going to be healthier. In fact, I think that much of the improvement in diets among vegans is a result of education rather than going meat free. In other words, if someone chooses to go vegan they are more likely to care about what they are eating and therefore are more likely to educate themselves on the types of foods they should and should not be eating.


    From: https://goo.gl/AwDYY7. Accessed on 03/22/2017.

    According to the text, it is right to say that:
    Escolha uma alternativa para a questão 6c9e30be-ff
  • 6C9A1219-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017FácilEntre para guardar nos favoritos

    VEGAN VS VEGETARIAN – WHAT’S THE DIFFERENCE?

     

    By Alina Petre

         

        Vegetarian diets have reportedly been around since as early as 700 B.C. Several typesexist and individuals may practice them for a variety of reasons, including health, ethics, environmentalism and religion. Vegan diets are a little more recent, but are getting a good amount of press.

     

    What is a vegetarian diet?

     

         According to the Vegetarian Society, a vegetarian is someone who does not eat any meat, poultry, game, fish, shellfish or by-products of animal slaughter. Vegetarian diets contain various levels of fruits, vegetables, grains, pulses, nuts and seeds. The inclusion of dairy and eggs depends on the type of diet you follow.

     

    The most common types of vegetarians include:

     

    • Lacto-ovo vegetarians: Vegetarians who avoid all animal flesh, but do consume dairy and egg products.

    • Lacto vegetarians: Vegetarians who avoid animal flesh and eggs, but do consume dairy products.

    • Ovo vegetarians: Vegetarians who avoid all animal products except eggs.

    • Vegans: Vegetarians who avoid all animal and animal-derived products.

     

       Those  who do not eat  meat  or poultry but  do consume  fish are considered pescatarians, whereas part-time vegetarians are often referred to as flexitarians.

        Although sometimes considered vegetarians, pescatarians and flexitarians do eat animal flesh. Therefore, they do not technically fall under the definition of vegetarianism.

     

    From: https://goo.gl/n9yEy1. Accessed on 03/22/2017

    The pronoun them (first paragraph) refers to:
    Escolha uma alternativa para a questão 6c9a1219-ff
  • 6C9714AB-FF

    Inglês

    Interpretação de texto | Reading comprehension
    URCA · 2017MédioEntre para guardar nos favoritos

    VEGAN VS VEGETARIAN – WHAT’S THE DIFFERENCE?

     

    By Alina Petre

         

        Vegetarian diets have reportedly been around since as early as 700 B.C. Several typesexist and individuals may practice them for a variety of reasons, including health, ethics, environmentalism and religion. Vegan diets are a little more recent, but are getting a good amount of press.

     

    What is a vegetarian diet?

     

         According to the Vegetarian Society, a vegetarian is someone who does not eat any meat, poultry, game, fish, shellfish or by-products of animal slaughter. Vegetarian diets contain various levels of fruits, vegetables, grains, pulses, nuts and seeds. The inclusion of dairy and eggs depends on the type of diet you follow.

     

    The most common types of vegetarians include:

     

    • Lacto-ovo vegetarians: Vegetarians who avoid all animal flesh, but do consume dairy and egg products.

    • Lacto vegetarians: Vegetarians who avoid animal flesh and eggs, but do consume dairy products.

    • Ovo vegetarians: Vegetarians who avoid all animal products except eggs.

    • Vegans: Vegetarians who avoid all animal and animal-derived products.

     

       Those  who do not eat  meat  or poultry but  do consume  fish are considered pescatarians, whereas part-time vegetarians are often referred to as flexitarians.

        Although sometimes considered vegetarians, pescatarians and flexitarians do eat animal flesh. Therefore, they do not technically fall under the definition of vegetarianism.

     

    From: https://goo.gl/n9yEy1. Accessed on 03/22/2017

    Why can´t pescatarians and flexitarians be considered vegetarians?
    Escolha uma alternativa para a questão 6c9714ab-ff