A Carnot engine operates between reservoirs at 800K and 400K,
discarding 2000 J of heat in each cycle.
(a) What is the engine's efficiency?
(b) How much heat is supplied to the engine by the hot reservoir
in each cycle?
A) (a) 0.6, (b) 3500 J
B) (a) – 0.6, (b) – 3500 J
C) (a) 0.45, (b) 6000 J
D) (a) 0.5, (b) 4000 J
E) (a) 2, (b) 3200 J