A Primeira Grande Guerra teve início em 1914, estendeu-se até 1918 e envolveu países de todos os continentes. Sobre esse conflito, é correto afirmar que

Um jogo pedagógico foi desenvolvido com as seguintes regras:

– Os alunos iniciam a primeira rodada com 256 pontos;
– Faz-se uma pergunta a um aluno. Se acertar, ele ganha a metade dos pontos que tem. Se errar, perde metade dos pontos que tem;
– Ao final de 8 rodadas, cada aluno subtrai dos pontos que tem os 256 iniciais, para ver se “lucrou” ou “ficou devendo”.

O desempenho de um aluno que, ao final dessas oito rodadas, ficou devendo 13 pontos foi de

A pilha de uma lanterna possui uma força eletromotriz de 1,5 V e resistência interna de !$ 0,05 \Omega !$. O valor da tensão elétrica nos polos dessa pilha quando ela fornece uma corrente elétrica de 1,0 A a um resistor ôhmico é de

Leia o texto a seguir e responda à questão.

What is a pub? The word pub is short for public house. Pubs are popular social meeting places. They are an important part of British life. People talk, eat, drink, meet their friends and relax there. Many have a garden where people can sit in the summer. One of the oldest pubs, Fighting Cocks in St. Albans, Herts, is located in a building that dates back to the eleventh century. Groups of friends normally buy ‘rounds’ of drinks, where the person whose turn it is will buy drinks for all the members of the group. In most pubs in Britain, you must go to the bar to order drinks and food and pay for your purchase immediately, there is no table service. Bartenders do not expect frequent tipping. To tip them, it is customary to say: “Would you like a drink yourself?”

Adaptado de http://projectbritain.com/pubs.htm, consulta em 22/06/2012

According to the text, it is correct to say that in Britain

Sejam as funções reais !$ f(x) = \sqrt {x^2 + 4x} !$ e !$ g(x) = x - 1 !$. O domínio da função !$ f(g(x)) !$ é

Assinale a alternativa que completa corretamente as lacunas.

“Não nos respeito os motivos que os homens a à causa.

Em “Embarcaremos amanhã, então, vimos dizer-lhe adeus, hoje.”, a alternativa que classifica corretamente a conjugação modo-temporal do verbo destacado no fragmento é

O amperímetro é um instrumento utilizado para a medida de intensidade de corrente elétrica em um circuito constituído por geradores, receptores, resistores, etc. A maneira correta de conectar um amperímetro a um trecho do circuito no qual queremos determinar a intensidade da corrente é

Leia o texto a seguir e responda à questão.

Apple manufacturing plant workers complain of long hours and militant culture

Chengdu, China (CNN) — Miss Chen (we changed her name for this story), an 18-year-old student from a village outside of the southern megacity of Chongqing, is one of more than one million factory workers at a Chinese company that helps manufacture products for Apple Inc.’s lucrative global empire, which ranked in a record $46.3 billion in sales last quarter. They work day or night shifts, eating and sleeping at company facilities, as they help build electronics products for Apple and many other global brand names, such as Amazon’s Kindle and Microsoft’s Xbox.

As a poor college student with no work experience, looking for a job in China’s competitive market is an uphill battle. So when Chen was offered a one-month position at Foxconn with promises of great benefits and little overtime, she jumped at the chance. But when she started working, she found out that only senior employees got such benefits.

“During my first day of work, an older worker said to me, ‘Why did you come to Foxconn? Think about it again and leave right now’,” said Chen, who plans to return to her studies at a Chongqing university soon.

Foxconn recently released a statement defending its corporate practices, stating its employees are entitled to numerous benefits including access to health care and opportunities for promotions and training. In response to questions from CNN, Apple also released a statement:
“We care about every worker in our worldwide supply chain. We insist that our suppliers provide safe working conditions, treat workers with dignity and respect, and use environmentally responsible manufacturing processes wherever Apple products are made. Our suppliers must live up to these requirements if they want to keep doing business with Apple.”

After three weeks of applying more than 4,000 stickers a day onto iPad screens by hand and working 60 hours a week in an assembly line, Chen says she’s ready to go back to school and study hard so she’ll never have to return to Foxconn. “It’s so boring, I can’t bear it anymore. Everyday is like: I get off from work and I go to bed. I get up in the morning, and I go to work. It is my daily routine and I almost feel like an animal,” said Miss Chen. When asked why humans do machine-like work at Foxconn, she responds, “Well, humans are cheaper.”

Adaptado de http://edition.cnn.com, consulta em 06/02/2012

It’s correct to say that Miss Chen

Sobre escala cartográfica, leia as afirmativas abaixo:

I – existem dois tipos de escala cartográfica: a numérica e a geográfica;

II – na escala 1:5.000, podemos visualizar mais detalhes do que na escala 1:500.000, portanto a primeira é mais adequada para representar grandes superfícies terrestres, como, por exemplo, uma região ou país;

III – em um mapa de escala 1:2.000.000, a distância gráfica de 3 cm entre dois pontos, em linha reta, corresponde a uma distância real de 60 km;

IV – a escala 1:500, muito utilizada na construção de plantas urbanas, é maior do que a escala 1:1.000.000, que é utilizada, por exemplo, para representar um continente ou mesmo o Mundo.

Assinale a alternativa que apresenta todas as afirmativas corretas.