Em uma fábrica de bebidas, a máquina que envasa refrigerantes é capaz de encher 150 garrafas de 2 L a cada minuto e funcionar ininterruptamente durante 8 horas por dia.

Para atender uma encomenda de 198 000 garrafas de 2 L, a máquina é colocada para funcionar todos os dias, a partir do dia 10, sempre das 8 h às 16 h.

A máquina terminará essa tarefa no dia:

Considere duas cargas, QA=4 µC e QB=-5µC separadas por 3cm no vácuo. Elas são postas em contato e, após, separadas no mesmo local, por 1cm Qual o sentido e o valor da força eletrostática entre elas, após o contato?

A tabela seguinte informa a quantidade de pessoas que compraram ingressos antecipados de um determinado show, cujos preços eram modificados semanalmente.

O percentual de pessoas que adquiriram o ingresso por menos de R$ 125,00 foi 

(ACAFE) Brazil cotton deal perpetuates an unhealthy status quo of subsidies

When is a victory for the United States not a victory for the American taxpayer? When it’s an international agreement like the one the Obama administration has just reached to settle a long-running dispute with Brazil over cotton subsidies. The roots of that dispute ¹lie in this country’s history of showering federal funds on crop producers, including cotton growers. That particular business received $32.9 billion from Washington between 1995 and 2012, according to the Environmental Working Group, largely through programs that had the effect of rewarding farmers for increasing production. The extra supply dampened prices on the world market, so, in 2002, Brazil complained to the World Trade Organization, which ruled that US cotton subsidies were indeed “trade-distorting” and authorized Brazil to retaliate against US exports. The United States avoided sanctions — not by reforming its programs but by agreeing in 2010 to pay Brazil’s cotton farmers $147.3 million per year.

In short, the US government bought off Brazil’s cotton farmers so that it could ²keep on buying off its own. Under the new settlement, announced Wednesday, Brazil agreed to drop its case at the WTO and to ³forgo any new ones during the five-year term of the farm bill Congress enacted last year. In return, the United States agreed to trim the modest US cotton export credit subsidy program and, most important, to pay Brazil one last dollop of taxpayer cash, in the amount of $300 million.

This is good news to the extent that it fortifies US-Brazil relations on the eve of a new presidential term in that country and that it spares US exporters from the threat of Brazilian retaliation, which could have reached a total of $829 million per year. Yet, in essence, the new deal perpetuates the unhealthy status quo whereby the United States pays Brazil ____ the right ____ continue propping _____ a domestic cotton industry that can ____ should learn to compete ____ its own.

Published by The Washington Post (The text below has been slightly modified to better suit the exam) 

What does buy off mean as used in the text?

(FUVEST) Considere que a motorização de um país constitui um importante indicador para o planejamento dos transportes e da mobilidade urbana. Esse indicador pode ser obtido, por exemplo, com base na relação entre o número de habitantes e o de autoveículos, tal como expresso no gráfico abaixo. Destaque-se o fato de que, quanto menor essa relação, maior a motorização de um país

Com base no gráfico e em seus conhecimentos, é correto afirmar que a motorização