Física
MagnetismoIFF · 2017MédioEntre para guardar nos favoritos
Questões aplicadas na prova de 2017, cada uma em página própria com enunciado, alternativas e gabarito.
5.454 questões encontradas. Mostrando a página 196 de 273.


No plano cartesiano a seguir estão os gráficos que representam as funções f e g.

Sabendo que a curva que representa a função f é uma senóide e que o ponto destacado
(de intersecção das curvas) tem ordenada 2√2
, a lei que representa a função g é:

. O código é
decifrado pela matriz chave C =
e é enviado pela matriz
correspondente a (R.C + R). Assim, a mensagem SIM será enviada por meio
da matriz
, que é o resultado de
.
corresponde à palavra: Um arquiteto está projetando uma escada com 16 degraus, como mostra a imagem a seguir.

Fonte: <https://www.aarquiteta.com.br/blog/projetos-de-arquitetura/como-desenvolver-um-projeto-de-escada/>. Acesso em: 14 set 2017. (Adaptada)
Sabendo que α = 34º e que as medidas da escada da imagem estão em centímetros, a altura x de cada degrau da escada é:
(Considere tg 34º = 0,67; sen 34º =0,56; cos 34º = 0,83)

<http://www.cartoonistgroup.com/subject/The-Climate+Change-Comics-and-Cartoons.php>. Acesso em: 17 set 2017.
A charge apresentada relaciona-se corretamente com a seguinte alternativa:
Irma and Harvey lay the costs of climate change denial at Trump’s door
The president’s dismissal of scientific research is doing nothing to protect the livelihoods of ordinary Americans.
Bob Ward - Sunday 10 September 2017

As the US comes to terms with its second major weather disaster within a month, an important question is whether the devastation caused by hurricanes Harvey and Irma will convince Donald Trump and his administration of the reality of climate change.
The president’s luxurious Mar-a-Lago estate in Florida may escape Irma’s wrath, but with the deaths of so many Americans, and billions of dollars in damage to homes and businesses, the costs of climate change denial are beginning to pile up at the door of the White House.
Just days before Harvey formed in the Atlantic last month, Trump signed an executive order to overturn a policy, introduced by his predecessor Barack Obama, to help American communities and businesses become more resilient against the risks of flooding, which are rising because of climate change.
But the merciless assault on the US mainland by Harvey and Irma should be forcing the president to recognise the consequences of his arrogance and complacency in dismissing the research and analysis carried out by scientists.
The flooded streets of Houston and the wind-ravaged homes of south Florida bear the
unmistakable fingerprint of extreme weather made worse by manmade greenhouse gas
emissions.
A hurricane is a huge, rotating cluster of thunderstorms that forms above a sea surface that has a temperature of at least 26.5C. It is like a giant engine, transferring heat from the sea surface up into the atmosphere and generating strong winds and heavy rain in the process.
Climate change cannot be blamed for the hurricane count in any single season, nor for the occurrence of any single storm, but there are some ways in which it is making the consequences worse.
Adapted from: <https://www.theguardian.com/world/2017/sep/10/hurricane-irma-harvey-climate-change-trump>. Acesso em: 17 set 2017.
Irma and Harvey lay the costs of climate change denial at Trump’s door
The president’s dismissal of scientific research is doing nothing to protect the livelihoods of ordinary Americans.
Bob Ward - Sunday 10 September 2017

As the US comes to terms with its second major weather disaster within a month, an important question is whether the devastation caused by hurricanes Harvey and Irma will convince Donald Trump and his administration of the reality of climate change.
The president’s luxurious Mar-a-Lago estate in Florida may escape Irma’s wrath, but with the deaths of so many Americans, and billions of dollars in damage to homes and businesses, the costs of climate change denial are beginning to pile up at the door of the White House.
Just days before Harvey formed in the Atlantic last month, Trump signed an executive order to overturn a policy, introduced by his predecessor Barack Obama, to help American communities and businesses become more resilient against the risks of flooding, which are rising because of climate change.
But the merciless assault on the US mainland by Harvey and Irma should be forcing the president to recognise the consequences of his arrogance and complacency in dismissing the research and analysis carried out by scientists.
The flooded streets of Houston and the wind-ravaged homes of south Florida bear the
unmistakable fingerprint of extreme weather made worse by manmade greenhouse gas
emissions.
A hurricane is a huge, rotating cluster of thunderstorms that forms above a sea surface that has a temperature of at least 26.5C. It is like a giant engine, transferring heat from the sea surface up into the atmosphere and generating strong winds and heavy rain in the process.
Climate change cannot be blamed for the hurricane count in any single season, nor for the occurrence of any single storm, but there are some ways in which it is making the consequences worse.
Adapted from: <https://www.theguardian.com/world/2017/sep/10/hurricane-irma-harvey-climate-change-trump>. Acesso em: 17 set 2017.
Irma and Harvey lay the costs of climate change denial at Trump’s door
The president’s dismissal of scientific research is doing nothing to protect the livelihoods of ordinary Americans.
Bob Ward - Sunday 10 September 2017

As the US comes to terms with its second major weather disaster within a month, an important question is whether the devastation caused by hurricanes Harvey and Irma will convince Donald Trump and his administration of the reality of climate change.
The president’s luxurious Mar-a-Lago estate in Florida may escape Irma’s wrath, but with the deaths of so many Americans, and billions of dollars in damage to homes and businesses, the costs of climate change denial are beginning to pile up at the door of the White House.
Just days before Harvey formed in the Atlantic last month, Trump signed an executive order to overturn a policy, introduced by his predecessor Barack Obama, to help American communities and businesses become more resilient against the risks of flooding, which are rising because of climate change.
But the merciless assault on the US mainland by Harvey and Irma should be forcing the president to recognise the consequences of his arrogance and complacency in dismissing the research and analysis carried out by scientists.
The flooded streets of Houston and the wind-ravaged homes of south Florida bear the
unmistakable fingerprint of extreme weather made worse by manmade greenhouse gas
emissions.
A hurricane is a huge, rotating cluster of thunderstorms that forms above a sea surface that has a temperature of at least 26.5C. It is like a giant engine, transferring heat from the sea surface up into the atmosphere and generating strong winds and heavy rain in the process.
Climate change cannot be blamed for the hurricane count in any single season, nor for the occurrence of any single storm, but there are some ways in which it is making the consequences worse.
Adapted from: <https://www.theguardian.com/world/2017/sep/10/hurricane-irma-harvey-climate-change-trump>. Acesso em: 17 set 2017.

TEXTO II
Descoberta da Literatura


MELO NETO, João Cabral de. A escola das facas e Auto do frade. Rio de Janeiro: Objetiva, 2008.
1. guenzo¹: Expressão nordestina que significa pessoa ou animal magro e doente; capenga, caindo aos
pedaços. 2. cassacos²: animal do mato. 3. curumbá³: localidade geralmente deserta e distante de qualquer
povoado. 4. caçanje4
: Dialeto crioulo do português falado em Angola. P. ext. Português mal falado.






Considerando os conhecimentos sobre a Região Nordeste brasileira, marque V nas afirmativas verdadeiras e F, nas falsas.
( ) O Nordeste reúne os mais baixos IDH do país, com altas taxas de mortalidade infantil e de analfabetismo.
( ) A Bahia é o maior e mais populoso estado nordestino, tendo a maior parte de seu território situada na região do sertão.
( ) Essa região é a maior produtora de petróleo do país, com jazidas localizadas na plataforma continental do Estado da Bahia.
( ) A principal atividade econômica do Agreste, nos trechos mais secos, é a agricultura irrigada de frutas tropicais voltada para a exportação.
( ) O Meio-Norte corresponde a uma faixa de transição entre o Sertão semiárido e a Amazônia, sua vegetação natural inclui, em sua maioria, babaçus e carnaúbas.
A alternativa que indica a sequência correta, de cima para baixo, é a
Desde o final da Segunda Guerra Mundial, o Oriente Médio transformou-se em uma das regiões mais instáveis do mundo. Sobre os conflitos nessa região, marque V nas afirmativas verdadeiras e F, nas falsas.
( ) O território do Líbano viveu uma guerra civil provocada pela disputa de poder entre grupos religiosos do país.
( ) A guerra do Irã-Iraque resultou de disputas políticas e territoriais entre esses dois países, tendo-se iniciado com a invasão do Iraque no território iraniano.
( ) A escassez de água é um problema grave nessa região, pois gera conflitos entre países, como é o caso de Israel, do Líbano, da Síria e da Jordânia, que disputam o domínio da bacia do rio Jordão.
( ) A Guerra do Golfo iniciou-se com a invasão do Kuwait por curdos xiitas, na tentativa de aumentar o preço do petróleo na região.
( ) Os principais motivos do conflito entre israelenses e palestinos são as diferenças culturais e a disputa de terras.
A alternativa que indica a sequência correta, de cima para baixo, é a