A Carnot heat engine absorbs heat Q from a hot reservoir at 127^oC and exhausts heat to a cold reservoir at 27^oC. How much heat is exhausted to the cold reservoir?

Question

Quizplus · Accepted Answer

The efficiency of a Carnot engine is given by 1 - (T_cold/T_hot), where temperatures are in Kelvin. Converting to Kelvin, T_hot = 400K and T_cold = 300K. The efficiency is 1 - (300/400) = 1/4. Therefore, 3/4 of the heat Q is exhausted to the cold reservoir.

A Carnot Heat Engine Absorbs Heat Q from a Hot