3 am physics lesson

[haunter259]

"Experience shows that it is impossible to make a refridgerator that transports heat from a colder body to a hotter body without the addition of work. If no work were needed, the coefficient of performance would be infinite. We call such a device a workless refridgerator; it is a mythical beast, like the unicorn and the free lunch."

8am physics final. 5 hours, I have to chapters to read.
My only goal is to not fail.