Foram encontradas 125 questões.
Seja !$ f(x)=\dfrac {(2x-3).(4x+1)}{(x+2).(x-5)} !$ uma função. Um valor que não pode estar no domínio de f é
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Questão presente nas seguintes provas
Observe o gráfico abaixo que relaciona a velocidade (v) em função do tempo (t), de um ponto material. Sobre as afirmativas abaixo, as que estão corretas são
I. No trecho AB, a força resultante que atua sobre o ponto material é no sentido do movimento.
II. No trecho BC, não há forças atuando sobre o ponto material.
III. O trecho CD pode ser explicado pela 2ª lei de Newton.
IV. De acordo com a 1ª lei de Newton, no trecho BC o corpo está em repouso.
Provas
Questão presente nas seguintes provas
Leia o mesmo fato em manchetes de jornais diferentes:
“Vasco derrotou o Palmeiras.”
“O Palmeiras foi derrotado pelo Vasco.”
As formas verbais derrotou e foi derrotado estão flexionadas, respectivamente, na voz
Provas
Questão presente nas seguintes provas
Mad car disease
It was in the summer of 1992 that Britain’s two main motoring organisations, the RAC Royal Automobile Club and the AA (Automobile Association), started to issue warnings about an increase in aggressive behaviour on the roads.
The RAC noted that more and more drivers were losing their temper behind the wheel, and there were reports of fights between motorists.
In Wakefield, West Yorkshire, a 78-year-old man died after he had been punched by a driver half his age during a dispute at a set of traffic lights. In another incident a pedestrian who forced a van driver to brake suddenly was beaten senseless by a vehicle’s two occupants.
(Adapted from Speak Up # 9)
GLOSSARY
to issue warnings – divulgar advertências
to issue warnings – divulgar advertências
The text is about:
Provas
Questão presente nas seguintes provas
Peter is a very good professional. He is the _______ in his company. He is always _____ than his friends. Everybody says that Peter is ______ punctual employee.
The correct words to fill in the blanks are, respectively:
Provas
Questão presente nas seguintes provas
Um corpo, de 10 kg de massa, tem 1m³ de seu volume imerso em um recipiente contendo água, pois está preso por meio de uma mola ao fundo do recipiente, conforme a figura. Supondo que o corpo está em equilíbrio, a força que a mola exerce sobre o corpo é de ____ N.
Dados:
densidade da água 10³kg/m³
aceleração da gravidade (g) = 10 m/s²
densidade da água 10³kg/m³
aceleração da gravidade (g) = 10 m/s²
Provas
Questão presente nas seguintes provas
Are you a procrastinator?
Following a schedule and doing things on time is extremely important in today’s busy world. Using time effectively is a valuable skill that everyone must master. Catching a bus, getting to work or school on time, and even meeting friends requires managing time. Unfortunately, not everyone is very good at doing this. Many people are procrastinators; they put off doing things that they need to until it’s too late. We all procrastinate sometimes in life.
“... not everyone is very good at doing this.”, means that
Provas
Questão presente nas seguintes provas
The food that everyone loves
Several studies in recent years have found that chocolate could be more beneficial than harmful. It can be bad for you if you overdo it: in this case, it can trigger migraines or digestive disorders, besides making you fat. Doctors and nutritionists recommend that daily consumption should not exceed 50 grams. The good thing about chocolate, especially dark chocolate, is that it has a high level of substances called flavonoids, which help slow the aging process and help reduce the risk of heart disease. ________ being delicious, chocolate is nutritious because it contains vitamins A, B, C, D and E, and minerals – such as iron and phosphorus.
“Such as”, in bold type in the text, could be replaced by any of the following, except:
Provas
Questão presente nas seguintes provas
Mad car disease
It was in the summer of 1992 that Britain’s two main motoring organisations, the RAC Royal Automobile Club and the AA (Automobile Association), started to issue warnings about an increase in aggressive behaviour on the roads.
The RAC noted that more and more drivers were losing their temper behind the wheel, and there were reports of fights between motorists.
In Wakefield, West Yorkshire, a 78-year-old man died after he had been punched by a driver half his age during a dispute at a set of traffic lights. In another incident a pedestrian who forced a van driver to brake suddenly was beaten senseless by a vehicle’s two occupants.
(Adapted from Speak Up # 9)
GLOSSARY
to issue warnings – divulgar advertências
to issue warnings – divulgar advertências
“... more and more drivers were losing their temper behind the wheel”, means that drivers
Provas
Questão presente nas seguintes provas
Com base nos conceitos relativos aos fenômenos ondulatórios são feitas as seguintes afirmações:
I) A freqüência, a velocidade e o comprimento de onda não variam no fenômeno da reflexão.
II) A freqüência, a velocidade e o comprimento de onda variam no fenômeno da refração.
III) O fenômeno da difração de uma onda é explicado pelo princípio de Huygens.
Das afirmações acima são corretas
Provas
Questão presente nas seguintes provas
Cadernos
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