Question

1. An aluminum rod conducts 9.70 cal/s from a heat source maintained at 245 ∘C to a large body of water at 23 ∘C. Calculate the rate at which entropy increases in this process.

2. The working substance of a certain Carnot engine is 1.90 mol of an ideal monatomic gas. During the isothermal expansion portion of this engine's cycle, the volume of the gas doubles, while during the adiabatic expansion the volume increases by a factor of 5.7. The work output of the engine is 950 J in each cycle. Compute the temperatures of the two reservoirs between which this engine operates.

Answer 1

Solution in the uploaded images