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5A985EEE-3C Dois estudantes da FGV divertem-se jogando sinuca, após uma exaustiva jornada de estudos. Um deles impulsiona a bola branca sobre a bola vermelha, idênticas exceto pela cor, inicialmente em repouso. Eles observam que, imediatamente após a colisão frontal, a bola branca para e a vermelha passa a se deslocar na mesma direção e no mesmo sentido da velocidade anterior da bola branca, mas de valor 10% menor que a referida velocidade. Sobre esse evento, é correto afirmar que houve conservação de momento linear do sistema de bolas, mas sua energia mecânica diminuiu em5A93A441-3C Física
Conteúdos BásicosFGV · 2014MédioEntre para guardar nos favoritosA força resistiva (Fr) que o ar exerce sobre os corpos em movimento assume, em determinadas condições, a expressão Fr = k · v2 , em que v é a velocidade do corpo em relação a um referencial inercial e k é uma constante para cada corpo. Para que a expressão citada seja homogênea, a unidade de k, no sistema internacional de unidades, deve ser5A7D3394-3C Inglês
Interpretação de texto | Reading comprehensionFGV · 2014MédioEntre para guardar nos favoritosArgentina defaults – Eighth time unlucky
Cristina Fernández argues that her country's latest default is different. She is missing the point.
Aug 2nd 2014
ARGENTINA'S first bond, issued in 1824, was supposed to have had a lifespan of 46 years. Less than four years later, the government defaulted. Resolving the ensuing stand-off with creditors took 29 years. Since then seven more defaults have followed, the most recent this week, when Argentina failed to make a payment on bonds issued as partial compensation to victims of the previous default, in 2001.
Most investors think they can see a pattern in all this, but Argentina’s president, Cristina Fernández de Kirchner, insists the latest default is not like the others. Her government, she points out, had transferred the full $539m it owed to the banks that administer the bonds. It is America’s courts (the bonds were issued under American law) that blocked the payment, at the behest of the tiny minority of owners of bonds from 2001 who did not accept the restructuring Argentina offered them in 2005 and again in 2010. These “hold-outs”, balking at the 65% haircut the restructuring entailed, not only persuaded a judge that they should be paid in full but also got him to freeze payments on the restructured bonds until Argentina coughs up.
Argentina claims that paying the hold-outs was impossible. It is not just that they are “vultures" as Argentine officials often put it, who bought the bonds for cents on the dollar after the previous default and are now holding those who accepted the restructuring (accounting for 93% of the debt) to ransom. The main problem is that a clause in the restructured bonds prohibits Argentina from offering the hold-outs better terms without paying everyone else the same. Since it cannot afford to do that, it says it had no choice but to default.
Yet it is not certain that the clause requiring equal treatment of all bondholders would have applied, given that Argentina would not have been paying the hold-outs voluntarily, but on the courts' orders. Moreover, some owners of the restructured bonds had agreed to waive their rights; had Argentina made a concerted effort to persuade the remainder to do the same, it might have succeeded. Lawyers and bankers have suggested various ways around the clause in question, which expires at the end of the year. But Argentina's government was slow to consider these options or negotiate with the hold-outs, hiding instead behind indignant nationalism.
Ms Fernández is right that the consequences of America's court rulings have been perverse, unleashing a big financial dispute in an attempt to solve a relatively small one. But hers is not the first government to be hit with an awkward verdict. Instead of railing against it, she should have tried to minimise the harm it did. Defaulting has helped no one: none of the bondholders will now be paid, Argentina looks like a pariah again, and its economy will remain starved of loans and investment.
Happily, much of the damage can still be undone. It is not too late to strike a deal with the hold-outs or back an ostensibly private effort to buy out their claims. A quick fix would make it easier for Argentina to borrow again internationally. That, in turn, would speed development of big oil and gas deposits, the income from which could help ease its money troubles.
More important, it would help to change perceptions of Argentina as a financial rogue state. Over the past year or so Ms Fernández seems to have been trying to rehabilitate Argentina's image and resuscitate its faltering economy. She settled financial disputes with government creditors and with Repsol, a Spanish oil firm whose Argentine assets she had expropriated in 2012. This week's events have overshadowed all that. For its own sake, and everyone else's, Argentina should hold its nose and do a deal with the hold-outs.
(http://www.economist.com/news/leaders/21610263. Adapted)
In the excerpt from the last paragraph – ... perceptions of Argentina as a financial rogue state – the expression financial rogue state implies a country which is5A64E47E-3C Inglês
Interpretação de texto | Reading comprehensionFGV · 2014MédioEntre para guardar nos favoritosArgentina defaults – Eighth time unlucky
Cristina Fernández argues that her country's latest default is different. She is missing the point.
Aug 2nd 2014
ARGENTINA'S first bond, issued in 1824, was supposed to have had a lifespan of 46 years. Less than four years later, the government defaulted. Resolving the ensuing stand-off with creditors took 29 years. Since then seven more defaults have followed, the most recent this week, when Argentina failed to make a payment on bonds issued as partial compensation to victims of the previous default, in 2001.
Most investors think they can see a pattern in all this, but Argentina’s president, Cristina Fernández de Kirchner, insists the latest default is not like the others. Her government, she points out, had transferred the full $539m it owed to the banks that administer the bonds. It is America’s courts (the bonds were issued under American law) that blocked the payment, at the behest of the tiny minority of owners of bonds from 2001 who did not accept the restructuring Argentina offered them in 2005 and again in 2010. These “hold-outs”, balking at the 65% haircut the restructuring entailed, not only persuaded a judge that they should be paid in full but also got him to freeze payments on the restructured bonds until Argentina coughs up.
Argentina claims that paying the hold-outs was impossible. It is not just that they are “vultures" as Argentine officials often put it, who bought the bonds for cents on the dollar after the previous default and are now holding those who accepted the restructuring (accounting for 93% of the debt) to ransom. The main problem is that a clause in the restructured bonds prohibits Argentina from offering the hold-outs better terms without paying everyone else the same. Since it cannot afford to do that, it says it had no choice but to default.
Yet it is not certain that the clause requiring equal treatment of all bondholders would have applied, given that Argentina would not have been paying the hold-outs voluntarily, but on the courts' orders. Moreover, some owners of the restructured bonds had agreed to waive their rights; had Argentina made a concerted effort to persuade the remainder to do the same, it might have succeeded. Lawyers and bankers have suggested various ways around the clause in question, which expires at the end of the year. But Argentina's government was slow to consider these options or negotiate with the hold-outs, hiding instead behind indignant nationalism.
Ms Fernández is right that the consequences of America's court rulings have been perverse, unleashing a big financial dispute in an attempt to solve a relatively small one. But hers is not the first government to be hit with an awkward verdict. Instead of railing against it, she should have tried to minimise the harm it did. Defaulting has helped no one: none of the bondholders will now be paid, Argentina looks like a pariah again, and its economy will remain starved of loans and investment.
Happily, much of the damage can still be undone. It is not too late to strike a deal with the hold-outs or back an ostensibly private effort to buy out their claims. A quick fix would make it easier for Argentina to borrow again internationally. That, in turn, would speed development of big oil and gas deposits, the income from which could help ease its money troubles.
More important, it would help to change perceptions of Argentina as a financial rogue state. Over the past year or so Ms Fernández seems to have been trying to rehabilitate Argentina's image and resuscitate its faltering economy. She settled financial disputes with government creditors and with Repsol, a Spanish oil firm whose Argentine assets she had expropriated in 2012. This week's events have overshadowed all that. For its own sake, and everyone else's, Argentina should hold its nose and do a deal with the hold-outs.
(http://www.economist.com/news/leaders/21610263. Adapted)
The excerpt from the fourth paragraph – had Argentina made a concerted effort to persuade the remainder to do the same, it might have succeeded. – denotes an idea of7DE9A441-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

The option in which the phrase in boldface is correctly explained is.7DE0A1E5-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

Thomas Piketty is mentioned in Paragraph 9 (lines 100-117) because he is.7DDBAB77-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

Automation, according to what is expressed in Paragraph 8 (lines 85-98), cannot be held fully accountable for.7DD67C01-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

In “… part of that drop may reflect revisions in the methods of gathering data.)” (lines 79-81) the writer expresses a(n).7DD197E2-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

In the fragments “…wages are held down by increasing competition from workers displaced from the tradable sector.” (lines 59-60) and “(Reliable data on this transition are hard to come by…” (lines 75-76), held down and come by mean, respectively,7DCCB340-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

In Paragraph 5 (lines 44-60) the authors explain why, in a technological and globalized world,7DC3008F-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

The two subtitles found in the text (LABOR PAINS and CAPITAL PUNISHMENT).7DBBCEA8-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

In Paragraph 3, the authors affirm that “…in the future, ideas will be the real scarce inputs in the world” (lines 27-28) because.7DB6EFD9-3C Inglês
Interpretação de texto | Reading comprehensionPUC - RJ · 2014MédioEntre para guardar nos favoritos

According to the information presented on lines 23 to 26, the referred distribution of income takes the form of a power law, in which.5D784BB2-3C Química
Propriedades Químicas dos Compostos Orgânicos: Número de Oxidação do Carbono. Efeitos Eletrônicos. Caráter Ácido-Base.PUC - RJ · 2014MédioEntre para guardar nos favoritosConsidere as seguintes afirmações a respeito da acidez e da basicidade dos compostos orgânicos citados.
I. Metilamina (CH3NH2) possui caráter básico, pois o par de elétrons livres do átomo de nitrogênio pode receber próton dando origem a uma ligação.
II. Metilamina (CH3NH2) possui caráter básico, pois um dos átomos de hidrogênio ligados ao átomo de nitrogênio pode ser doado facilmente.
III. Fenol (C6H5OH) possui um caráter ácido fraco, mas ainda assim ele pode doar íon H+ quando reage, por exemplo, com uma base forte.
É correto APENAS o que se afirma em5D6F02A9-3C Química
Cadeias Carbônicas: Características e Classificações do Átomo do Carbono, Tipos de Ligação e Hibridação. Tipos de Cadeias Carbônicas e Fórmulas. Séries: Homóloga, Isóloga e Heteróloga.PUC - RJ · 2014MédioEntre para guardar nos favoritosA seguir está representada a estrutura do ácido fumárico.

A respeito desse ácido, é correto afirmar que ele possui
5D689CF5-3C Química
Equilíbrio QuímicoPUC - RJ · 2014MédioEntre para guardar nos favoritosA um volume de 1,0 L de efluente industrial contendo íons Cu2+, adicionou-se excesso de sulfeto de amônio para precipitar todo o cobre dissolvido na amostra na forma de CuS. Ao se recolher o precipitado e secá-lo, constatou-se que a massa era 2,40 g. A concentração, em mol L-1 , que mais se aproxima da de Cu2+ no efluente é:
Considere: M(Cu) = 63,5 g mol-1
M(S) = 32 g mol-15D632B87-3C Química
Grandezas: massa, volume, mol, massa molar, constante de Avogadro e Estequiometria.PUC - RJ · 2014MédioEntre para guardar nos favoritosAssumindo que uma amostra de gás oxigênio puro, encerrada em um frasco, se comporta idealmente, o valor mais próximo da densidade, em gL-1 , desse gás a 273 K e 1,0 atm é:
Considere: R = 0,082 atm L mol-1 K-1
M(O2) = 32 g mol-15D555E2D-3C Química
Radioatividade: Reações de Fissão e Fusão Nuclear, Desintegração Radioativa e Radioisótopos.PUC - RJ · 2014MédioEntre para guardar nos favoritosNum processo de fissão nuclear, um nêutron colidiu com o núcleo de um isótopo do urânio levando à formação de dois núcleos menores e liberação de nêutrons que produziram reações em cadeia com liberação de grande quantidade de energia. Uma das possíveis reações nucleares nesse processo é representada por:

O produto X, formado na fissão nuclear indicada acima, é um isótopo do elemento químico:
5D3D2331-3C Física
CinemáticaPUC - RJ · 2014MédioEntre para guardar nos favoritos
Um bloco de massa 0,50 kg está preso a um fio ideal de 40 cm de comprimento cuja extremidade está fixa à mesa, sem atrito, conforme mostrado na figura. Esse bloco se encontra em movimento circular uniforme com velocidade de 2,0 m/s.
Sobre o movimento do bloco, é correto afirmar que:
5D33B7AC-3C Física
Física Térmica - TermologiaPUC - RJ · 2014MédioEntre para guardar nos favoritosUm gás ideal sofre uma compressão isobárica tal que seu volume se reduz a 2/3 do inicial.
Se a temperatura inicial do gás era de 150 °C, a temperatura final, em °C, é: