#### Carnot Cycle: ConcepTest and Example Problem

##### Example Problem 1

A heat pump is used to transfer heat from a reservoir (T_{C} = 250 K) to a higher-temperature reservoir (T_{H} = 300 K). The work done on the pump is 500 J.

1. What is the entropy change for the cycle?

2. Calculate values of Q_{H} and Q_{C}.

3. Determine the coefficient of performance.