Questões de Vestibular FGV 2016 para Vestibular - Inglês, Física, Química e Língua Portuguesa

Foram encontradas 135 questões

Q1273867 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

According to the third paragraph, the objective of the formula is to
Alternativas
Q1273868 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

In the excerpt of the third paragraph “We have devised a formula to help us evaluate the fundamental strength”, the word in bold refers to
Alternativas
Q1273869 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

In the excerpt of the fourth paragraph “Brazil, for example, is known as a vulnerable market due to the commodities downturn”, the expression in bold introduces a
Alternativas
Q1273870 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

Based on the fourth paragraph, the fifth paragraph presents Brazil as
Alternativas
Q1273871 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

In the sixth paragraph, the text indicates Brazil should
Alternativas
Q1273872 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

In the excerpt of the sixth paragraph “However, there are signs things are being turned around” the word in bold can be replaced, without meaning change, by
Alternativas
Q1273873 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

In the excerpt of the sixth paragraph “Once political stability returns, the government will be empowered to do even more”, the word in bold expresses an idea of
Alternativas
Q1273874 Inglês

Leia o texto para responder a questão. 

Patience is needed for Brazil to come good again

Michael Hasenstab

Dr. Michael Hasenstab is executive

vice-president, portfolio manager

and chief investment officer of

Templeton Global Macro


    The Olympic Games in Rio drew global interest to Brazil, but the country and the rest of South America has been in sharp focus for investors all year. They have flocked to the region as part of a broader migration into emerging market debt, following record low valuations and the hunt for yield in a low interest rate environment. While investors have been presented with a rarely seen buying opportunity in emerging markets like South America, it is a mistake to regard these countries as a homogenous group.

    That leaves the challenge of working out which are the most attractive opportunities – some of our best known investments were not obvious choices.

    We have devised a formula to help us evaluate the fundamental strength of different emerging market countries. It scores a country’s current and projected strength on five factors: how well it has learnt the lessons from past crises; the quality of its policy mix; the structural reform being undertaken to boost productivity; the level of domestic demand; and its ability to resist external shocks. The aim is to pick nations that are fundamentally strong but, for one reason or another, are out of favour with investors. It can take time for the market to catch up to reality. But if you are a long-term investor – and we are certainly in that camp – you have the luxury of being able to wait.

    Brazil, for example, is known as a vulnerable market due to the commodities downturn, the ongoing corruption crisis and ensuing political turmoil, but our work suggests to us that it is poised for a potentially significant rebound in the long term. Its current score is low, but its projected future score tells a different story.

    We believe the country has learnt the lessons from the most recent crisis, which brought home the importance of having a sustainable fiscal policy. It has already adopted a flexible exchange rate, has strong foreign exchange reserves and has limited short-term debt. This is also reflected in the country’s improving resilience to external shocks, with a reliance on commodities, at 60 per cent of exports, being the largest remaining negative.

    It is perhaps no surprise, given Brazil’s deep recession and political instability, that there is much work required in terms of improving policy mix, making structural reforms and boosting domestic demand. However, there are signs things are being turned around, with monetary policy already being tightened aggressively to bring inflation expectations back under control, and the previously excessive levels of governmentsubsidised lending being cut. Once political stability returns, the government will be empowered to do even more.

    Work on structural reform should accelerate too, as Brazil’s middle class has made it clear it wants greater transparency and an economic policy framework that can both boost living standards and improve the environment for businesses.

(www.ft.com. 01.09.2016. Adaptado) 

In the excerpt of the seventh paragraph “Work on structural reform should accelerate too”, the word in bold can be replaced, without meaning change, by
Alternativas
Q1273875 Inglês

Leia o texto para responder a questão.


Economists Reduce Outlook for Brazil Inflation – Survey

By Rogerio Jelmayer – Dow Jones Business News 


Shutterstock phot


   Economists reduced their inflation estimate in Brazil for this year and next year, according to the central bank’s weekly survey of 100 economists published Monday. Economists now expect inflation, as measured by the consumer-price index, to be 7.25% this year, compared with last week’s estimate of 7.34%, the survey showed.

     Economists estimate Brazil’s gross domestic product is likely to contract 3.14% this year, compared with an expected contraction of 3.15% in last week’s survey. Last year, Brazil’s economy contracted 3.80%, according to the country’s statistical bureau, IBGE. For 2017, economists reduced their view of GDP growth to 1.30% from 1.36%.

(www.nasdaq.com. 26.06.2016. Adaptado)

In the title of the text, the word “outlook” means
Alternativas
Q1273876 Inglês

Leia o texto para responder a questão.


Economists Reduce Outlook for Brazil Inflation – Survey

By Rogerio Jelmayer – Dow Jones Business News 


Shutterstock phot


   Economists reduced their inflation estimate in Brazil for this year and next year, according to the central bank’s weekly survey of 100 economists published Monday. Economists now expect inflation, as measured by the consumer-price index, to be 7.25% this year, compared with last week’s estimate of 7.34%, the survey showed.

     Economists estimate Brazil’s gross domestic product is likely to contract 3.14% this year, compared with an expected contraction of 3.15% in last week’s survey. Last year, Brazil’s economy contracted 3.80%, according to the country’s statistical bureau, IBGE. For 2017, economists reduced their view of GDP growth to 1.30% from 1.36%.

(www.nasdaq.com. 26.06.2016. Adaptado)

The survey mentioned in the text
Alternativas
Q1273877 Física
A área de um vitral quadrado foi apresentada com o valor de 1,960·102 m2 . A menor divisão da trena com a qual foram medidas a base e a altura do vitral foi o
Alternativas
Q1273878 Física
O gráfico horário da posição (S), em função do tempo (t), descreve, qualitativamente, o deslocamento de um veículo sobre uma trajetória. As curvas, nos trechos A, B e D, são arcos de parábola cujos vértices estão presentes no gráfico. Imagem associada para resolução da questão
Analisando o gráfico, é correto concluir que
Alternativas
Q1273879 Física
A nave “New Horizons”, cuja foto é apresentada a seguir, partiu do Cabo Canaveral em janeiro de 2006 e chegou bem perto de Plutão em julho de 2015. Foram mais de 9 anos no espaço, voando a 21 km/s. É uma velocidade muito alta para nossos padrões aqui na Terra, mas muito baixa se comparada aos 300000 km/s da velocidade da luz no vácuo. Imagem associada para resolução da questão (http://goo.gl/oeSWn)
Considere uma nave que possa voar a uma velocidade igual a 80% da velocidade da luz e cuja viagem dure 9 anos para nós, observadores localizados na Terra. Para um astronauta no interior dessa nave, tal viagem duraria cerca de
Alternativas
Q1273880 Física
Uma partícula eletrizada de massa m gira no interior de um campo magnético uniforme descrevendo um movimento circular uniforme de raio R e frequência f. Então um sistema de n partículas iguais a essa, girando nas mesmas condições, estará dotado de uma energia cinética dada por
Alternativas
Q1273881 Física
Os Jogos Olímpicos recém-realizados no Rio de Janeiro promoveram uma verdadeira festa esportiva, acompanhada pelo mundo inteiro. O salto em altura foi uma das modalidades de atletismo que mais chamou a atenção, porque o recorde mundial está com o atleta cubano Javier Sotomayor desde 1993, quando, em Salamanca, ele atingiu a altura de 2,45 m,marca que ninguém, nem ele mesmo, em competições posteriores, conseguiria superar. A foto a seguir mostra o atletaem pleno salto. 
Imagem associada para resolução da questão (Wikipedia) 
Considere que, antes do salto, o centro de massa desse atleta estava a 1,0 m do solo; no ponto mais alto do salto, seu corpo estava totalmente na horizontal e ali sua velocidade era de 2 ·√5 m/s; a aceleração da gravidade é 10 m/s2; e não houve interferências passivas. Para atingir a altura recorde,ele deve ter partido do solo a uma velocidade inicial, em m/s, de
Alternativas
Q1273882 Física
Johannes Kepler (1571-1630) foi um cientista dedicado ao estudo do sistema solar. Uma das suas leis enuncia que as órbitas dos planetas, em torno do Sol, são elípticas, com o Sol situado em um dos focos dessas elipses. Uma das consequências dessa lei resulta na variação
Alternativas
Q1273883 Física
Segundo o manual do proprietário de determinado modelo de uma motocicleta, de massa igual a 400 kg, a potência do motor é de 80 cv (1 cv ≅ 750 W).
Imagem associada para resolução da questão (https://goo.gl/9aeM0K.com)
Se ela for acelerada por um piloto de 100 kg, à plena potência, a partir do repouso e por uma pista retilínea e horizontal, a velocidade de 144 km/h será atingida em, aproximadamente,
Alternativas
Q1273884 Física
Um bloco metálico, maciço, homogêneo, de capacidade térmica C, é feito de um material de coeficiente de dilatação linear α e ocupa um volume V0 à temperatura ambiente. Ele é colocado no interior de um forno quente e recebe uma quantidade de calor Q até entrar em equilíbrio térmico com o forno sem sofrer mudança de estado físico. Como consequência, seu volume sofre uma dilatação ∆V. Tal dilatação é diretamente proporcional a V0 ,
Alternativas
Q1273885 Física
A figura a seguir ilustra três cilindros sólidos maciços e homogêneos, de mesma área da base e altura (volumes iguais), em equilíbrio em um líquido. O cilindro A está completamente submerso, sem tocar no fundo do recipiente, o cilindro B está com metade de seu volume emerso, enquanto o cilindro C apresenta 1/3 de seu volume abaixo da superfície livre do líquido. Imagem associada para resolução da questão
Sobre essa situação, é correto afirmar que
Alternativas
Q1273886 Física
Ao ser admitido no interior da câmara de combustão do motor de uma motocicleta, o vapor de etanol chega a ocupar o volume de 120 cm3 sob pressão de 1,0 atm e temperatura de 127 ºC. Após o tempo de admissão, o pistão sobe, o volume ocupado por essa mistura diminui para 20 cm3, e a pressão aumenta para 12 atm. Considerando a mistura um gás ideal e desprezando perdas de calor devido à rápida compressão, a temperatura do gás resultante desse processo no interior da câmara passa a ser, em ºC, de
Alternativas
Respostas
81: B
82: E
83: D
84: B
85: E
86: A
87: C
88: B
89: A
90: B
91: B
92: D
93: B
94: A
95: A
96: E
97: D
98: B
99: C
100: C