일반물리학 1 — Entropy and the Second Law of Thermodynamics: Problem 20

20 (a) During each cycle, a Carnot engine absorbs 730 J as heat from a high-temperature reservoir at 360 K, with the low-temperature reservoir at 280 K. How much work is done per cycle? (b) The engine is then made to work in reverse to function as a Carnot refrigerator between those same two reservoirs. During each cycle, how much work is required to remove 1200 J as heat from the low-temperature reservoir?