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( ) O trabalho realizado pelo gás é de 3.105 J.
( ) A transformação BC se deu a volume constante, portanto é uma transformação isocórica.
( ) A quantidade de calor trocado no ciclo é igual a zero, pois temos uma transformação cíclica.
( ) O trabalho realizado sobre o gás é de 0,9.105 J.
Assinale a alternativa que indica respectivamente o comprimento de onda (λ) em cm, a amplitude (A), em mm, e a velocidade de propagação (v), em cm/s, dessa onda.
I‐ A unidade associada com a grandeza intensidade luminosa é candela (cd).
II‐ A unidade associada com a grandeza quantidade de matéria é metro (m).
III‐ A unidade associada com a grandeza intensidade de corrente elétrica é ampère (A).
IV‐ A unidade associada com a grandeza temperatura termodinâmica é Celsius (C).
Com relação ao Sistema Internacional de unidade (SI), está correto o que se afirma em
< 0 é dada por: I‐ No ano passado estive alguns dias em Bogotá.
II‐ Era uma mulher de consciência.
III‐ “Tenho pensado que toda esta geringonça social precisa de uma grande volta.” (C. de Oliveira)
IV‐ Vivi com Maristela perto de dois anos.
Assinale a alternativa correta.
Read the text and answer the question.
What is a friend?
Márcio Paulo Barbosa Pena Mascarenhas
Laurie: To me, a friend is someone who stands by you when you need them, someone who cares. Not like your parents, ________. Parents are either picking on you or telling you off, so sometimes it’s a pain. To a friend you can always open up.
Angela: I agree with Laurie but personally, I don’t think a friend has to be physically around all the time. I have friends that I haven’t seen in years, but I know if we get together, we’ll pick up right where we left off.
Fran: I think a friend is that old pal you’ve always gotten on with. I often look back on my schooldays and I think of the funny things my friends and I did together. As I see it, the friends you make in youth are friends to keep for a lifetime.
Gary: If you ask me, a friend is a person you have fun and relax with. My friends and I talk about movies, sports or politics. I don’t go round telling them my troubles and I don’t particularly want to hear theirs. I believe that if you don’t expect too much from people, you won’t be let down.
Grade 1, Student’s book, Belo Horizonte, 14th edition.
( ) In Angela’s opinion, a friend is someone who keeps physical contact with a fellow, at least once a year, in order to show the person that he/she cares about him/her.
( ) Gary thinks you should have fun and enjoy life with your friends, talking to them about your interests instead of talking about your problems and above all: without expectations.
( ) As far as Laurie is concerned, a friend is just like parents. Someone you can count on and talk about your feelings.
( ) In Frank’s view, friends are those who have good memories with you; those who are part of your teenager time and because of this should be kept for your whole life.
Read the text and answer the question.
What is a friend?
Márcio Paulo Barbosa Pena Mascarenhas
Laurie: To me, a friend is someone who stands by you when you need them, someone who cares. Not like your parents, ________. Parents are either picking on you or telling you off, so sometimes it’s a pain. To a friend you can always open up.
Angela: I agree with Laurie but personally, I don’t think a friend has to be physically around all the time. I have friends that I haven’t seen in years, but I know if we get together, we’ll pick up right where we left off.
Fran: I think a friend is that old pal you’ve always gotten on with. I often look back on my schooldays and I think of the funny things my friends and I did together. As I see it, the friends you make in youth are friends to keep for a lifetime.
Gary: If you ask me, a friend is a person you have fun and relax with. My friends and I talk about movies, sports or politics. I don’t go round telling them my troubles and I don’t particularly want to hear theirs. I believe that if you don’t expect too much from people, you won’t be let down.
Grade 1, Student’s book, Belo Horizonte, 14th edition.
Read the text and answer the question
One man in a boat
L.G. Alexander
Fishing is my favourite sport. I often fish for hours without catching anything. But this does not worry me. Some fishermen are unlucky. Instead of catching fish, they catch old boots and rubbish. I am even less lucky. I never catch anything ‐ not even old boots. After having spent whole mornings on the river, I always go home with an empty bag. “You must give up fishing!” my friends say. “It’s a waste of time.” But they don’t realize one important thing. I’m not really interested in fishing. I am only interested in sitting in a boat and doing nothing at all!
PRACTICE AND PROGRESS ‐ An Integrated Course for Pre‐Intermediate Students, L.G Alexander, Longman Group Limited, London.
( ) A corrente alternada (CA) é um fluxo oscilante de cargas elétricas que ora se movimenta em um sentido, ora em outro. Esse tipo de corrente é produzido por baterias e hidroelétricas. O sentido da corrente alternada real é dado pelo sentido do fluxo dos portadores das cargas positivas.
( ) O fenômeno de emissão de luz que ocorre quando uma corrente elétrica passa através de um gás rarefeito é conhecido como efeito térmico.
( ) Para medir a tensão aplicada aos terminais de um resistor, um voltímetro deve ser inserido a este de forma paralela. Além disso, para não influenciar no circuito medido, o voltímetro deve possuir a maior resistência interna possível, fazendo com que a corrente que o atravessa seja insignificante.
Considere coeficiente de condutibilidade térmica da parede k = 2,0.10‐3 cal/s.cm °C.