Physics

Problem

A sample of gas executes a clockwise cyclic process on a

P\!-\!V

diagram that encloses a non-zero area. Which of the following gives the correct signs of the net work

W_{\text{gas}}

done BY the gas and the net heat

Q

added TO the gas over one complete cycle? a)

W_{\text{gas}}<0,\; Q>0

W_{\text{gas}}>0,\; Q>0

W_{\text{gas}}>0,\; Q<0

W_{\text{gas}}<0,\; Q<0