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Questões de Concursos

Foram encontradas 228 questões

Q880063 Inglês

The modern F=ma form of Newton's second law occurs nowhere in any edition of the Principia even though he had seen his second law formulated in this way in print during the interval between the second and third editions in Jacob Hermann's Phoronomia of 1716. Instead, it has the following formulation in all three editions: A change in (1) ________ is proportional to the motive (2) ________ impressed and takes place along the (3) _________ line in which that force is (4)________. In the body of the Principia this law is applied both to (5) _______ cases, in which an instantaneous impulse such as from impact is effecting the change in motion, and to cases of (6) _______ action, such as the change in motion in the continuous deceleration of a body moving in a resisting medium. Newton thus appears to have intended his second law to be neutral between discrete forces (that is, what we now call impulses) and Hermann's Phoronomia of 1716. Instead, it has the following formulation in all three editions: A change in (1) ________ is proportional to the motive (2) ________ impressed and takes place along the (3) _________ line in which that force is (4)________. In the body of the Principia this law is applied both to (5) _______ cases, in which an instantaneous impulse such as from impact is effecting the change in motion, and to cases of (6) _______ action, such as the change in motion in the continuous deceleration of a body moving in a resisting medium. Newton thus appears to have intended his second law to be neutral between discrete forces (that is, what we now call impulses) and continuous forces.

(Adaptado de George Smith, "Newton's Philosophiae Naturalis Principia Mathematica", em Edward N. Zalta (ed.), The Stanford Encyclopedia of Philosophy (Winter 2008 Edition). Disponível em https://plato.stanford.edu/archives/win2008/entries/newton-principia/. Acessado em 24/10/2017.)

Assinale a alternativa que apresenta a sequência adequada de palavras que preenchem as lacunas do texto acima, para que os conceitos utilizados estejam corretos. 

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Q880062 Inglês

Coral reefs are colorful underwater forests which teem with life and act as a natural protective barrier for coastal regions. The fishes and plants which call them home belong to some of the most diverse ― and fragile ― ecosystems on the planet. Higher sea temperatures from global warming have already caused major coral bleaching events. Bleaching occurs when corals respond to the stress of warmer temperatures by expelling the colorful algae that live within them. Increased levels of atmospheric carbon dioxide result in higher levels of CO² in the water, leading to ocean acidification, which is also a threat to coral. As the oceans become more acidic, the corals' ability to form skeletons through calcification is inhibited, causing their growth to slow. Increasing sea levels caused by melting sea ice could also cause problems for some reefs by making them too deep to receive adequate sunlight, another factor important for survival.

(Adaptado de Coral Reefs, The National Wildlife Federation. Disponível em https://www.nwf.org/Wildlife/Threats-to-Wildlife/GlobalWarming/Effects-on-Wildlife-and-Habitat/Coral-Reefs.aspx. Acessado em 26/07/2017.)

Considerando o texto e seus conhecimentos, assinale a alternativa correta.


Os recifes de corais estão seriamente ameaçados pela combinação dos seguintes fatores:

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Q880061 Inglês
Should Twitter entertain millions with public arguments? 
Comedian Janey Godley's tweets of a couple's train-bound row raise questions of how to protect our privacy in public places. 

If the troubles of the two travellers had made it on to a newspaper first rather than a comedian's Twitter feed, would we be so relaxed about loss of privacy? I think perhaps not. Social media has done so much for freedom of expression, it would be cruel if it actually leads to less social freedom for fear of having our every misstep, angry word or misbehaviour broadcast there for all to see. 
(Adaptado de David Banks, Should Twitter entertain millions with public rows? The Guardian, 13/07/2012. Disponível em https://www.theguardian.com/commentisfree/2012/jul/13/twittermillions-public-rows. Acessado em 10/07/2017.)


No artigo de opinião acima, o autor 

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Q880060 Inglês

Segundo o testemunho de Olaudah Equiano,

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Q880059 Inglês

(Adaptado de Ajay Gautam, Lily Li e Kumar Srinivasan, Market watch: Therapeutic area ‘heat map’ for emerging markets. Nature Reviews Drug Discovery 14, p. 518, jul. 2015.)

De acordo com o gráfico apresentado,

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Respostas
1: A
2: C
3: B
4: C
5: C