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Q1987333 Física
Uma onda estacionária é estabelecida numa corda homogênea de massa igual a 2,4 kg, formando 5 nós e 4 ventres. Sabendo que a distância entre nós consecutivos é de 1,5 m e que a frequência estabelecida na corda é de 50 Hz, determine a velocidade de propagação da onda na corda, em m/s, e a intensidade da força, em N, que traciona a mesma.  
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Q1987331 Física
Na figura a seguir apresenta-se uma caixa de madeira de massa igual a 6,0 kg que está sobre um assoalho de madeira e é puxada por uma força externa paralela ao solo através de uma mola, até que entre em movimento e, em seguida mantenha-se em velocidade constante. A diferença entre o alongamento máximo da mola e o alongamento necessário para manter o movimento descrito é de _____ cm.

Assinale a alternativa que preenche corretamente a frase acima.

Dados:
I- Coeficiente de atrito estático entre a caixa e o assoalho, μe = 0,62
II- Coeficiente de atrito cinético entre a caixa e o assoalho, μc = 0,48
III- Constante elástica da mola, k = 100 N/m
IV- Módulo da aceleração da gravidade, g = 10 m/s2
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Q1987330 Física
Um recipiente metálico, cujo coeficiente de dilatação volumétrico tem valor igual a 3,6 . 10-5 ºC-1, na temperatura de 20 ºC apresenta um volume interno de 0,2 litros e está completamente cheio com um líquido X. Quando o conjunto (recipiente + líquido) é aquecido até uma temperatura de 120 ºC extravasa um volume equivalente a 2,08 cm3 de líquido. Determine, em ºC-1, o valor do coeficiente de dilatação volumétrico real do líquido X.  
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Q1987329 Matemática

Seja f:IR  IR definida por  Imagem associada para resolução da questão       

 

Se f(1) = 1 e f(-1) = 8, então _________.

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Q1987328 Matemática
Dadas as matrizes   Imagem associada para resolução da questão e B = A2 , o valor do determinante de B é ________.
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Q1987323 Matemática
Em um teste de Química, a pontuação obtida pelos alunos é mostrada na tabela. Dessa forma, a pontuação mediana é ______. 
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Q1987320 Matemática
Na figura, o ângulo x é formado pelas bissetrizes dos ângulos internos dos vértices B e C do triângulo ABC. Dessa forma, pode-se afirmar que 2x − y é igual a _______. 

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Q1987318 Matemática

Seja o hexágono regular ABCDEF, de lado medindo 4 cm. Assim, BF = _______ cm.  


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Q1987313 Matemática
Seja um quadrilátero convexo ABCD, cuja diagonal Imagem associada para resolução da questão mede 14 cm. Se a área do quadrilátero é 70 cm2 e o vértice B dista 4 cm da referida diagonal, então a distância do vértice D à diagonal Imagem associada para resolução da questão é _____ cm. 
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Q1987305 Inglês
Read the text below.

What’s your sign?
Neil J. Anderson

        Thousands of years ago, the ancient people of Babylon and Egypt studied the stars in the sky and created the zodiac. It was first used to keep track of time. Later, many used the stars to describe a person’s personality and to say what would happen in the future.        A person’s zodiac sign is connected to his or her birth date. Some believe this sign can tell us about a person’s personality.(...)        In Asia, a person’s blood type is also used to describe personality. People with the blood type A are calm and serious, but they can be selfish. Type Bs are independent but can be lazy. ABs are honest, and type Os are loving and talkative.      Not everybody believes that your blood type or birth sign describes your personality. In fact, some people disapprove of using the zodiac; they say it is just foolishness. (...)
Active Skills for Reading, 2nd Edition, Student Book 1.

    According to the text, write T for true and F for false to the statements related to the zodiac. After, choose the alternative with the right sequence.
( ) It was originally created to reveal the future. ( ) It is linked to the day a person was born. ( ) It is considered silly by some people. ( ) It was created to name the stars. 
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Q1987304 Inglês

According to the chart, write T for true and F for false, then choose the right alternative.  


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( ) Even if people wanted to help, there wouldn’t be much they could do.

( ) People help when they don’t purchase goods made out of animals’ fur.

( ) Few people believe education is the main key to help endangered animals.

( ) Many people believe that giving some of your time to work for charities help endangered animals. 



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Q1987303 Inglês
Read the cartoon and, without changing the meaning, choose the alternative that substitutes the modal verb CAN in “We can do something about the future”.  
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Q1987302 Inglês

Choose the alternative that best substitutes the words “turned upside down” in the picture below. 


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Q1987301 Inglês
Volcano eruption in Italy

     A volcano eruption in southern Italy caused chaos in the skies yesterday. The eruption produced a cloud of smoke that slowly spread itself over an area of thousands of square kilometers. The excessive amount of ash particles in the airspace caused a biplane to crash. The fine gray particles got inside both engines and, all of a sudden, neither of them were working. The crash had one fatal victim: a 21-year-old pilot named Antonella Ponzini. Her father, a rich landowner, is said to be devastated at the loss of his only daughter. 
Choose the conditional sentence that correctly summarizes the text.  
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Q1987300 Inglês
Volcano eruption in Italy

     A volcano eruption in southern Italy caused chaos in the skies yesterday. The eruption produced a cloud of smoke that slowly spread itself over an area of thousands of square kilometers. The excessive amount of ash particles in the airspace caused a biplane to crash. The fine gray particles got inside both engines and, all of a sudden, neither of them were working. The crash had one fatal victim: a 21-year-old pilot named Antonella Ponzini. Her father, a rich landowner, is said to be devastated at the loss of his only daughter. 
The word itself, in bold in the text, refers to 
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Q1987299 Inglês
Volcano eruption in Italy

     A volcano eruption in southern Italy caused chaos in the skies yesterday. The eruption produced a cloud of smoke that slowly spread itself over an area of thousands of square kilometers. The excessive amount of ash particles in the airspace caused a biplane to crash. The fine gray particles got inside both engines and, all of a sudden, neither of them were working. The crash had one fatal victim: a 21-year-old pilot named Antonella Ponzini. Her father, a rich landowner, is said to be devastated at the loss of his only daughter. 
The only victim of the crash was the ________ pilot. 
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Q1987298 Inglês
Best job advice

     The best job advice I ever got was the following: at every job, you either learn or earn. It’s fine when __________ options occur. It’s perfect when both of them occur. But if you are not learning or earning at your current job, you should start thinking about finding a better one
Choose the alternative that best summarizes the text.  
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Q1987297 Inglês
Best job advice

     The best job advice I ever got was the following: at every job, you either learn or earn. It’s fine when __________ options occur. It’s perfect when both of them occur. But if you are not learning or earning at your current job, you should start thinking about finding a better one
The word got, underlined in the text, is closest in meaning to  
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Q1987296 Inglês
Best job advice

     The best job advice I ever got was the following: at every job, you either learn or earn. It’s fine when __________ options occur. It’s perfect when both of them occur. But if you are not learning or earning at your current job, you should start thinking about finding a better one
 The word one, in bold in the text, refers to 
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Q1987294 Inglês
Suggestion boxes

David Nunan

       It may not be a high-tech device, but the suggestion box has probably done more to boost corporate efficiency over the years ________ even the most powerful computer. Suggestion boxes allow workers to recommend ways of making their jobs easier and offer employers the chance to save money - or make even more. 

Listen In, Second Edition, Student Book 1, Thomson Heinle
Another way of saying “It may not be a high-tech device, but the suggestion box has probably done a lot to boost corporate efficiency” is
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Respostas
1201: B
1202: B
1203: C
1204: A
1205: B
1206: D
1207: D
1208: C
1209: B
1210: D
1211: D
1212: B
1213: A
1214: C
1215: C
1216: D
1217: B
1218: D
1219: A
1220: C