A Substance Undergoes a Series of Reversible Processes That Bring

Multiple Choice

A substance undergoes a series of reversible processes that bring it back to its initial state.In this cycle,heat Q_x is absorbed by the substance and heat Q_y is rejected.The net amount of work performed by the substance is

A) Q_y - Q_x
B) Q_x - Q_y
C) (Q_y - Q_x) /Q_y
D) (Q_x - Q_y) /Q_x
E) (Q_x - Q_y) /Q_y