Suppose that a certain Carnot engine operates between the temperatures of 500°C and 150°C and produces 30 J of work in each complete cycle.
a. What is the efficiency of this engine?
b. How much heat does it take in from the 450°C reservoir in each cycle?
c. How much heat is released to the 150°C reservoir in each cycle?
d. What is the change, if any, in the internal energy of the engine in each cycle?