Questões Militares Comentadas para aspirante da escola naval

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Q1696240 Física
A figura abaixo mostra o esquema de uma prensa hidráulica.
Imagem associada para resolução da questão

Uma bomba manual é utilizada para gerar uma força de intensidade F1, que é aplicada ao pistão menor, com diâmetro 2 cm, quando aplicada uma força Fa na extremidade da alavanca dessa bomba, cujas dimensões estão expressas na figura acima. Uma mola, com constante de mola 1,5 x 104 N/m , está presa a uma viga, fixa e rígida1 e ao pistão maior, com diâmetro 20 cm. Desprezando o peso dos pistões, qual deve ser o valor da força aplicada Fa na alavanca para que a mola sofra uma compressão de 20 cm?
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Q1696239 Física
Uma máquina térmica realiza a cada ciclo um trabalho de 8 x 102 J, com uma eficiência de 20%. Considerando que essa máquina opere segundo. um ciclo de Carnot, com a fonte fria a uma temperatura de 300 K, qual é a temperatura da fonte quente e quanto calor é cedido para a fonte fria, respectivamente?
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Q1696238 Física
Na figura abaixo é apresentada uma roda A, que transmite seu movimento para um conjunto de rodas B, C e D através de uma fita F, que permanece sempre esticada e não desliza. Se a roda A parte do repouso com aceleração constante e leva 40s para atingir sua velocidade final efetuando 180 rotações, qual deve ser a velocidade angular final da roda D? (Dados: o raio da roda A é RA = 0,3 m; o raio da roda B é RB = 0,2 m; o raio da roda C é RC = 0,25 m; e o raio da roda D é RD = RA = 0,3 m:
Imagem associada para resolução da questão
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Q1696237 Física
Um atleta de triatlon treina pedalando em uma via com velocidade constante, quando uma viatura da polícia rodoviária, em perseguição a outro veículo, aproxima-se com a sirene ligada. Quando a viatura ultrapassa o ciclista afastando-se dele, este passa a ouvir a sirene com uma frequência de valor 5/6 da frequência que ele ouvia antes, com a viatura se aproximando. Sabendo que o atleta e a viatura estavam no mesmo sentido e a viatura estava a uma velocidade constante de 144 km/h, qual era a velocidade aproximada do ciclista? (Dado: velocidade do som = 340 m/s)
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Q1696236 Física
Considere inicialmente um capacitor no vácuo com placas paralelas, de área A, separadas por uma distância d. A seguir é inserido um material, com constante dielétrica k e espessura a, paralelamente entre suas placas, conforme figura abaixo.
Imagem associada para resolução da questão
Determine a capacitäncia desse segundo arranjo em função da capacitância inicial Co (com vácuo entre as placas) e os dados a, d e k e marque a opção correta
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Q1695790 Inglês
Mark the option that completes the paragraph below correctly.
The Russian Vostok weather station in Antarctica has recorded temperatures as ______ as -89.2ºC (-128.6ºF). Here, the _______ temperature ever measured is -14ºC (7ºF).

Adapted from <https://www.climatestotravel.com/clîmate/antarctica>)
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Q1695789 Inglês
Which option completes the paragraph below correctly?
Speak, FIDO!

Imagine you're out for a walk with your family when a strange dog approaches. The dog isn't aggressive, but it seems ______ something because it nudges you with its snout, and barks. What you don't know is that this dog is trained _______ a person with a medical condition. Around the corner, the doq's owner has collapsed, and the dog instinctively runs off _____ help. That's you! But how can the dog make you _______ what's wrong?
(Adapted from https://www.timeforkids.com)
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Q1695788 Inglês
Read the sentences below.
I- People shouldn't drive so ____.
II- I need to see a doctor because I haven't been feeling well _____.
III- Although she's tried _______ to find a new job, she's still unemployed.

Which option completes the sentences correctly?
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Q1695787 Inglês
Which option completes the paragraph below correctly?

If your child has no symptoms of vision problems and no family history of vision problems, ________ every one to two years. Otherwise, schedule eye exams based on the advice of your eye doctor.
(Adapted from https://www.mayoclinic.org)

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Q1695786 Inglês
Which option completes the text correctly? A dash (-) indicates that no article is used.
_______ China's first autonomous cargo ship, named Jin Dou Yun O Hao, has made its first voyage in Zhuhai. Yunzhou Tech, ______ technology company based in Zhuhai, developed ______ ship in collaboration with Wuhan University of Technology and CCS. _______ autonomous cargo ship will reduce 20°/o construction cost, 20% operation cost and 15% fuel consumption.

(Adapted from https://www.seatrade-maritime.com)
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Q1695785 Inglês
Which is the correct option to complete the text below?
The Letter Always Wins
Somehow ______our several ways to contact a company and complain _______ products (email, toll free numbers, _______ person), the old-fashioned letter still seems to win. Case in point. This week Smucker's Jam agreed to replace two of my grandmother's Pineapple Jams that she had ordered. She talked ______ them _____ the phone and they apologized _____ the bad packaging. But it was her letter that got her two free replacements.

(Adapted from <https://www.wisebread.com/the-letteralways-wins>)
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Q1695784 Inglês
Which option completes the paragraph below correctly?

ln 1984, Dallas, Texas, a call to the emergency services ________ catastrophically wrong. An elderly woman _______ breathing in her home. Her son, clearly distressed, _______ 911. His conversation with the dispatcher soon _______ out of control.
(Adapted from https://www.bbc.com)
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Q1695783 Inglês
Which option completes the sentence below correctly?
Spinach is very thin, so there's more loss of moisture and exposure to heat and oxygen compared to a carrot,_______ ?
(Adapted from https://www.bbc.com)
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Q1695782 Inglês
Choose the correct option to complete the paragraph below.
        The Brazilian Navy _____ its new Antarctic station "Estação Antártica Comandante Ferraz" (EACF) on 15 January. The facility ______ by China National Electronic Imports and Exports Corporation (CEIEC) to replace the original EACF, which ______ by a fire in 2012. The new station_______ of laboratories, communications and meteorological modules, power generation equipment, and a living area for 64, as well as medical, healthcare, catering, and technical areas.
(Adapted from https://www.janes.com)
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Q1695781 Inglês
Which option completes the text below correctly?
There are ____different opinions on how ____ water you should be drinking every day. Health authorities commonly recommend eight 8- ounce glasses, which equals about 2 liters, or half a gallon. This is called the 8x8 rule and is very easy to remember. However, _____ health gurus believe that you need to sip on water constantly throughout the day, even when you're not thirsty. As with most things, this depends on the individual. _____ factors (both internal and external) ultimately affect your need for water.
(https://www.healthline.com)
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Q1695780 Inglês
Which option completes the paragraph below correctly?

It is important that female navy officers are now commanding vessels, not only because of ________ achievement in and of itself, but also because ________ types of posts will help ______ advance even more in ______ careers.

(Adapted from http://cimsec.org)
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Q1695779 Inglês
Analyze the questions below.

I- Who does this pencil belong to? Il- Who read a book last week? III- Where did your mother born? IV- What about are they talking? V- What fell on the floor yesterday?

Choose the correct option.
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Q1695778 Inglês
Mark the sentence that is grammatically INCORRECT.
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Q1695777 Inglês
Which option completes the text below correctly?
Renew or replace your adult passport
You ______ be aged 16 or over (or turning 16 in the next 3 weeks). if you want an adult passport. There's a different process to get a passport for a child.
The rules for passports, drivlnq, pet travel and more ______ change from 1 January 2021. Act now so you _____ travel as planned.
If you're in the UK you _____.
-renew your passport if it's expired or will expire soon; - replace your passport if it's been lost, stolen or damaged; - change the details on your passport.

(Adapted from <https://www.gov.uk/renew-adult-passport>)
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Q1695776 Inglês
Career confusion in the 21st century: challenges and opportunities


        [1] The time and energy that teenagers dedicate to learning and the fields of study they choose profoundly shape the opportunities they will have during their whole lives. Their dreams and aspirations do not just depend on their talents, but they can be highly influenced by their personal background as well as by the depth and extent of their knowledge about the world of work. ln summary, students cannot be what they cannot see.
        [2] With young people staying in education longe than ever and the labour market automating with unprecedented speed, students need help to make sense of the world of work. ln 2018, the OECD Programme for International Student Assessment (PISA), the world's largest dataset on young people's educational experiences, collected first-of-its kind data on this, making it possible to explore how much the career dreams o young people have changed over the past 20 years, how closely they are related to actual labour demand, and how closely aspirations are shaped by social background and gender.
    [3] Studies in Australia, the United Kingdom and the United States show that teenagers who combine part-time employment with full-time education do better in their school-to-work transitions. The positive benefits include lower probabilities of being unemployed or NEET (Not in Education1 Employment or Training), higher waçes, and others (see Box 1). However, the benefits cannot be taken for granted and some experiences in different countries have demonstrated that governments and schools can better support young people as they prepare themselves for working life.
     [4] Schools may provide programmes of career development activities, particularly those that include workplace experience. Experience of the world of work challenges young people to understand what it means to be personally effective in different workplaces while providing a unique opportunity to develop social networks of value. Through exposure to the people who do different jobs, young people have the chance to challenge genderN and class-based stereotyping and expand their aspirations, easing ultimate entry into the labour market (see Box 2).
        [5] However, in recent years, analyses of career preparation have focused on the challenge of misalignment: where the educational plans of young people are out of kilter with their occupational expectations. When young people underestimate the education required to fulfil their dreams, they can expect to find their early working lives more difficult than would be expected. Of particular concern is that most young people whose aspirations are misaligned with their education come from disadvantaged backgrounds. Consequently, it is now clear that career guidance serves an important service in dealing with inequalities.
        [6] Results from PISA show that the career aspirations of young people are no simple reflection of teenage academic ability. Rather, they reflect complex lives. Analyses show that the children of more advantaged families are more likely to want to go on to university than working class kids. Similarly, career thinking is often determined by gender and immigrant background as well as socioeconomic status. Disadvantaged young people are at clear risk of career confusion. lt is neither fair, nor efficient, for students to move through education with limited views of both the amplitude of the labour market and their own potential.




According to the text in Box 1, it is correct to say that people who worked a lot and studied when they were teenagers:
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Respostas
141: A
142: A
143: C
144: D
145: A
146: C
147: D
148: D
149: B
150: B
151: B
152: E
153: C
154: E
155: A
156: E
157: B
158: D
159: D
160: B