(Solved): * 3. The figure below shows a Carnot heat engine driving a Carnot refrigerator. a. Determine Q1, ...

* 3. The figure below shows a Carnot heat engine driving a Carnot refrigerator. a. Determine $Q_1,Q_2,Q_3$, and $Q_4$. b. Is $Q_3$ greater than, less than, or equal to $Q_1$ ? c. Do these two devices, when operated together in this way, violate the second law of thermodynamics?