(UDESC) Existem diferenças entre a organização das estruturas dos artrópodes. Em relação ao enunciado, associe as colunas.

Assinale a alternativa que contém a sequência correta, de cima para baixo.

Uma prensa hidráulica, sendo utilizada como elevador de um carro de peso P, encontra-se em equilíbrio, conforme a figura.

As secções retas dos pistões são indicadas por S₁ e S₂, tendo-se S₂=4S₁.

A força exercida sobre o fluido é F₁ e a força exercida pelo fluido é F_2.A situação descrita obedece: 

(UNIFACS) Diversos defeitos comuns da visão resultam de relações incorretas entre as distâncias dentro do olho. Um olho normal forma sobre a retina uma imagem de um objeto que se encontra no infinito quando o olho está relaxado. O ponto próximo de um olho hipermetrope fica 80,0 cm à frente do olho.

Considerando-se que se queira ver com nitidez um objeto situado a uma distância de 40,0 cm do olho, a potência da lente necessária, deve ser, em di, igual a

(UNESP) Oxfam study finds richest 1 percent is likely to control half of global wealth by 2016

By Patricia Cohen

January 19, 2015

The richest 1 percent is likely to control more than half of the globe’s total wealth by next year, the anti-poverty charity Oxfam reported in a study released on Monday. The warning about deepening global inequality comes just as the world’s business elite prepare to meet this week at the annual World Economic Forum in Davos, Switzerland.

The 80 wealthiest people in the world altogether own  the report found, nearly the same amount shared by the  people who occupy the bottom half of the world’s income scale. (Last year, it took 85 billionaires to equal that figure.) And the richest 1 percent of the population controls nearly half of the world’s total wealth, a share that is also increasing.

The type of inequality that currently characterizes the world’s economies is unlike anything seen in recent years, the report explained. “Between 2002 and 2010 the total wealth of the poorest half of the world in current U.S. dollars had been increasing more or less at the same rate as that of billionaires,” it said. “However since 2010, it has been decreasing over that time.”

Winnie Byanyima, the charity’s executive director, noted in a statement that more than a billion people lived on less than  a day. “Do we really want to live in a world where the 1 percent own more than the rest of us combined?” Ms. Byanyima said. “The scale of global inequality is quite simply staggering.”

Investors with interests in finance, insurance and health saw the biggest windfalls, Oxfam said. Using data from Forbes magazine’s list of billionaires, it said those listed as having interests in the pharmaceutical and health care industries saw their net worth jump by 47 percent. The charity credited those individuals’ rapidly growing fortunes in part to multimillion-dollar lobbying campaigns to protect and enhance their interests.

(www.nytimes.com. Adaptado.)

No trecho do terceiro parágrafo “However since 2010, it has been decreasing over that time.”, o termo “however” pode ser substituído, sem alteração de sentido, por 

Júlia está andando de bicicleta, em um plano horizontal e com velocidade constante, quando deixa cair uma moeda. Tomás está parado na rua e vê a moeda cair.

Considere desprezível a resistência do ar. Assinale a alternativa em que melhor estão representadas as trajetórias da moeda, como observadas por Júlia e por Tomás.