Questões de Concurso Militar EEAR 2025 para Sargento - CFS - Código 42
Foram encontradas 96 questões
Adote os valores
, sen 15°= 0,26, cos 30°= 0,87 e índice de refração do ar = 1.
( ) Na corrente contínua (CC), o fluxo de cargas elétricas ocorre em um único sentido. Esse tipo de corrente é produzido por pilhas e células fotovoltaicas. O sentido da corrente contínua real é dado pelo sentido do fluxo dos portadores das cargas negativas.
( ) 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.
Sabendo que o fio está inserido em um campo magnético (B) perpendicular e uniforme de 0,5 T, pode‐se concluir, corretamente, que após a corrente elétrica começar a circular pelo fio condutor, a força magnética Fm estará dirigida verticalmente para _______ e a mola sofrerá uma deformação igual a ______ cm.
I‐ As ondas mecânicas podem propagar‐se em diferentes meios materiais, inclusive no vácuo, sendo ondas bidimensionais.
II‐ As ondas mecânicas podem ser transversais e longitudinais dependendo da direção de vibração em relação à direção de propagação da onda.
III‐ As ondas eletromagnéticas não necessitam de um meio material para se propagarem.
IV‐ As ondas unidimensionais são aquelas que se propagam em um plano, como as ondas na superfície de um lago.
Está correto o que se afirma em
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
I‐ O módulo da força de atração gravitacional entre dois corpos de massas iguais a 0,5 kg, separados a uma distância de 0,5 m, é ___________.
II‐ O ___________________ é a região do espaço na qual é exercida uma força sobre um corpo, cuja natureza depende da causa que origina essa força ou interação.
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.
( ) 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 memorieswith you; those who are part of your teenager time and because of this should be kept for your whole life.
“To me, a friend is someone who stands by you when you need them...”
1 – someone
2 – who
3 – you
4 – them
( ) relative pronoun
( ) subject pronoun
( ) object pronoun
( ) indefinite pronoun
Read the text and answer the question.
Why man’s best friend is still a four‐legged substitute parent?
Márcio Paulo Barbosa Pena Mascarenhas
Man’s best friends is actually a substitute parent, fulfilling deep emotional needs that humans fail to meet, according to a leading dog expert. People bond with dogs as much as babies do with mothers, and reap unconditional love, security and protection from the relationship.
Dr. Valerie O’ Farrel ‐ a psychologist ‐ says that dogs can also compensate for an unhappy childhood. People perceive in their pets qualities lacking in their parents. According to him, most dogs perform remarkably well as “emotional sponges”, soaking up owners’ hang‐ups. “Dogs obviously cannot understand the nature of their owners’ predicaments in the way that a sympathetic human listener can. Because the dog does not get upset or angry or go away, the owner can imagine he understands”, states the doctor.
As well as protection, concern for our well‐being and unconditional love, we often assign to dogs a fourth parental function: providing a safe and welcoming base to come home to. Some canines take this duty very seriously, Dr. O’ Farrel reveals. She describes the experience of a 37‐year‐old beauty therapist with her faithfull mongrel. “He would follow me to the station each morning to see me off”. I would watch him from the carriage and see him about to turn and go home. Invariably, he would be there to meet me when I got off the train at night. And what’s more surprising ‐ we lived about a mile and a half from the station.
Grade 1, Student’s book, Belo Horizonte,14th edition.
Read the text and answer the question.
Why man’s best friend is still a four‐legged substitute parent?
Márcio Paulo Barbosa Pena Mascarenhas
Man’s best friends is actually a substitute parent, fulfilling deep emotional needs that humans fail to meet, according to a leading dog expert. People bond with dogs as much as babies do with mothers, and reap unconditional love, security and protection from the relationship.
Dr. Valerie O’ Farrel ‐ a psychologist ‐ says that dogs can also compensate for an unhappy childhood. People perceive in their pets qualities lacking in their parents. According to him, most dogs perform remarkably well as “emotional sponges”, soaking up owners’ hang‐ups. “Dogs obviously cannot understand the nature of their owners’ predicaments in the way that a sympathetic human listener can. Because the dog does not get upset or angry or go away, the owner can imagine he understands”, states the doctor.
As well as protection, concern for our well‐being and unconditional love, we often assign to dogs a fourth parental function: providing a safe and welcoming base to come home to. Some canines take this duty very seriously, Dr. O’ Farrel reveals. She describes the experience of a 37‐year‐old beauty therapist with her faithfull mongrel. “He would follow me to the station each morning to see me off”. I would watch him from the carriage and see him about to turn and go home. Invariably, he would be there to meet me when I got off the train at night. And what’s more surprising ‐ we lived about a mile and a half from the station.
Grade 1, Student’s book, Belo Horizonte,14th edition.