A figura abaixo apresenta o diagrama da pressão p(Pa) em função do volume V(m³) de um sistema termodinâmico que sofre três transformações sucessivas: XY, YZ e ZX.

O trabalho total realizado pelo sistema após as três transformações é igual a:

Lee el texto.

Origen de los días de la semana

En la antigüedad los hombres medían el tiempo fijándose en las fases de la Luna. La Luna tarda 29 días y medio en realizar un ciclo completo (Luna nueva, creciente, llena, menguante y otra vez nueva) así que más o menos tarda 7 días en cada fase (en realidad tarda 29.5/4=7.375 días). Por otro lado también en la antigüedad se conocían el Sol, la Luna y los planetas Mercurio, Venus, Marte, Júpiter y Saturno. Los demás planetas se descubrieron más tarde. Así que llamaron a cada uno de esos 7 días con un nombre de los astros conocidos. 

Día de la semana 

Astro 

Lunes 

Luna 

Martes 

Marte 

Miércoles 

Mercurio 

Jueves 

Júpiter 

Viernes 

Venus 

Sábado 

Saturno 

Domingo 

Sol* 

• En español, Domingo viene deDiem dominicum o día del señor en latín. En otros idiomas el Domingo está dedicado al Sol, (en inglés Sunday, día del Sol).

   Disponible en: http://goo.gl/shXU86. Acceso el: 25 mar. 2015.  

  Enunciado:

  Escribe seis frases relacionando los planetas a los días de la semana, como en el ejemplo.  

  Ejemplo: Domingo es el séptimo día de la semana, al principio estaba dedicado al sol.  

A) ___________________________________________________________________________________________

B) ___________________________________________________________________________________________

C) ___________________________________________________________________________________________

D) ___________________________________________________________________________________________

E) ___________________________________________________________________________________________

F) ___________________________________________________________________________________________

 Um modelo de automóvel tem seu valor depreciado em função do tempo de uso segundo a função f(t) = b.a^t com t em ano. Essa função está representada no gráfico.

Qual será o valor desse automóvel, em real, ao completar dois anos de uso?

Texto base: Leia o texto e observe as imagens. Estado para sair da crise Contrariando toda a crença liberal nos benefícios ofertados pelo afastamento do Estado das relações econômicas, o economista britânico John Maynard Keynes advogava o intervencionismo estatal como a única saída possível para o caos gerado pela Crise de 1929. E foi justamente tendo como norte as concepções keynesianas que a grande maioria das nações buscou revitalizar suas economias. MARTINS JÚNIOR, Leandro. Crise de 1929. Jornal O Globo, s/d.

Enunciado:

O programa econômico conhecido como New Deal da década de 1930 se relacionou à teoria keynesiana através da



(UERJ) Little Red Riding Hood

There once was a young person named Little Red Riding Hood who lived on the edge of a large forest full of endangered fauna and rare plants. One day her mother asked her to take a basket of organically grown fruit and mineral water to her grandmother’s house.

– But mother, won’t this be stealing work from the people who have struggled for years to earn the right to carry all packages between various people in the woods?

Red Riding Hood’s mother assured her that she had called the union secretary and had been given ¹a special compassionate mission exemption form.

²– But mother, aren’t you oppressing me by ordering me to do this? Red Riding Hood’s mother pointed out that it was impossible for women to oppress each other, since all women were equally oppressed until all women were free.

On her way to grandma’s house, Red Riding Hood passed a woodchopper and wandered off the path in order to examine some flowers. She was startled to find herself standing before a wolf, who asked her what was in her basket.

– I am taking my grandmother some healthy snacks in a gesture of solidarity. Now, if you’ll excuse me, I would prefer to be on my way.

Red Riding Hood returned to the main path and proceeded towards her grandmother’s house. But the wolf knew of a quicker route to grandma’s house. He burst into the house and ate grandma, a course of action affirmative of his nature as a predator. He put on grandma’s nightclothes and awaited.

Red Riding Hood entered the cottage and said:

– Goodness! grandma, what big eyes you have!

– You forget that I am optically challenged.

– And grandma, what an enormous nose you have!

– Naturally, I could have had it surgically fixed, but I didn’t give in to such societal pressures, my child.

– And grandma, what very big, sharp teeth you have!

The wolf could not take any more of this, grabbed Little Red Riding Hood and opened his jaws so wide that she could see her poor grandmother in his belly.

At the same time, the woodchopper burst into the cottage, brandishing an axe.

– Hands off!, cried the woodchopper.

– And what do you think you’re doing?, cried Little Red Riding Hood. If I let you help me now, I would be expressing a lack of confidence in my own abilities.

– Get your hands off that endangered species! This is a police raid!, screamed the woodchopper.

– Thank goodness you got here in time, said the Wolf. I thought I was a goner.

– But mother, aren’t you oppressing me by ordering me to do this? (ref. 2)

In the sentence above, the word but fulfills the function of: