Heat Engine?

Question

A heat engine follows the cycle shown in the figure*. a) How much net work is done by the engine in one cycle? b) What is the heat flow into the engine per cycle?

*Figure is shown in link-

http://i38.tinypic.com/2mea6g0.jpg

Thanks for any help =)

Answer 1

The net work is the area inside the rectangle. The heat flow is the area of the larger rectangle. You will have to convert m^3-atm into joules (or whatever energy units you want to use).