Foram encontradas 550 questões.
A figura acima mostra um circuito C.C. resistivo alimentado por uma bateria de 12V. As resistências encontram-se em ohms. A potência fornecida pela bateria, em watts, é
Provas
O circuito puramente resistivo da figura acima é alimentado por uma fonte de corrente. O valor da tensão VAB, em volts, entre os pontos A e B é
Provas
Um automóvel tem seu sistema elétrico alimentado por uma bateria de 12V. Com o motor desligado, ao acender os faróis, a tensão nos bornes da bateria cai para 11V e a corrente fornecida é de 4A. Em seguida, liga-se o som que exige mais 1A. Com as duas cargas atuando, a tensão nos bornes da bateria, em volts, cairá para
Provas
A figura acima mostra um documento sendo editado no WordPad. O símbolo 
apresentado na régua é utilizado para
Provas
Observe a planilha do Excel, denominada Vendas.
| A | B | |
|---|---|---|
| 1 | Pevgeot | 2 |
| 2 | FIAT | 2 |
| 3 | VW | 4 |
| 4 | Citroen | 5 |
| 5 | Audi | 4 |
| 6 | Ford | 3 |
| 7 | Renault | 2 |
Antônio criou um gráfico de “pizza” a partir dessa planilha. Se ele forneceu o valor =Vendas!$A$2:$B$5 para o intervalo de dados do gráfico (série em colunas), quantas categorias apresentou o gráfico gerado?
Provas
Observe este botão: 
No editor de textos WordPad, disponível na instalação padrão do Windows XP, qual a função desse botão para um documento que está sendo editado?
Provas
Para a operação com arquivos no ambiente Windows XP são feitas as afirmativas a seguir.
I – Um arquivo do tipo BMP pode ser editado através do Windows Paint.
II – Um arquivo de um usuário que está localizado no diretório c:\ pode ser definido pelo usuário como sendo somente para leitura.
III – Arquivos que estão na lixeira podem ser recuperados para serem utilizados posteriormente.
Está(ão) correta(s) a(s) afirmativa(s)
Provas
No Windows XP existem tarefas comuns que podem ser executadas através da utilização de teclas de atalho. Relacione as tarefas apresentadas na coluna da esquerda com as respectivas teclas de atalho, indicadas na coluna da direita.
Tarefas
I – Exibir o menu Iniciar.
II – Exibir as propriedades do item selecionado.
III – Alternar entre itens abertos.
IV – Fechar um item ativo, ou terminar um programa ativo.
Teclas de atalho
(Q) ALT + ENTER
(R) ALT + TAB
(S) CTRL + ESC
Estão corretas as associações:
Provas
Flying Anxiety - Just How Safe is Flying?
By Marissa Miller
Contrary to popular belief, flying on a commercial jetliner is extremely safe. Yet if you suffer from aviophobia (the fear of flying), that short sentence probably does nothing to ease your fears and anxiety.
According to a study conducted by the Valk Foundation, approximately 40% of people experience some level of anxiety about flying. The fear of flying typically stems from other common fears, such as the fear of heights, crowds, or claustrophobia.
Flying is in fact one of the safest modes of transportation. In fact, more than 3 million people fly around the world every single day without any incident. In 2000, more than one billion people flew throughout the world and there were only 20 fatal accidents. In the United States alone, fewer people have died in commercial plane accidents over the last 60 years than are killed in car crashes in a typical three month period. An even more sobering statistic is that about 115 people die every day in automobile accidents, which equates to one death every 13 minutes.
However, if the thought of flying really makes you extremely anxious and if it is interfering with your life (unable to go on vacations, business trips etc.), consider taking a fear of flying program or course, designed specifically to help people conquer their fears associated with flying. Such programs are typically offered at local airports and taught by pilots, therapists, and other qualified experts.
Retrieved from: http://ezinearticles.com/?Flying-Anxiety—Just-How-Safe-is-Flying?&id=1656050
In terms of meaning, it is correct to affirm that
Provas
Flying Anxiety - Just How Safe is Flying?
By Marissa Miller
Contrary to popular belief, flying on a commercial jetliner is extremely safe. Yet if you suffer from aviophobia (the fear of flying), that short sentence probably does nothing to ease your fears and anxiety.
According to a study conducted by the Valk Foundation, approximately 40% of people experience some level of anxiety about flying. The fear of flying typically stems from other common fears, such as the fear of heights, crowds, or claustrophobia.
Flying is in fact one of the safest modes of transportation. In fact, more than 3 million people fly around the world every single day without any incident. In 2000, more than one billion people flew throughout the world and there were only 20 fatal accidents. In the United States alone, fewer people have died in commercial plane accidents over the last 60 years than are killed in car crashes in a typical three month period. An even more sobering statistic is that about 115 people die every day in automobile accidents, which equates to one death every 13 minutes.
However, if the thought of flying really makes you extremely anxious and if it is interfering with your life (unable to go on vacations, business trips etc.), consider taking a fear of flying program or course, designed specifically to help people conquer their fears associated with flying. Such programs are typically offered at local airports and taught by pilots, therapists, and other qualified experts.
Retrieved from: http://ezinearticles.com/?Flying-Anxiety—Just-How-Safe-is-Flying?&id=1656050
Choose the alternative in which the idea introduced by the word in bold type is correctly described.
Provas
Caderno Container