A heat engine uses thermal energy that flows from a heat source with a temperature of 325 K to a cold sink, which has a temperat
ure of 135 K. What is the efficiency of the heat engine? The answer should have three significant figures
2 answers:
Answer:
58.5 %
Explanation:
temperature of hot source, T1 = 325 K
temperature of cold source, T2 = 135 K
The efficiency of a heat engine is defined as the ratio of work done to the input energy.
the formula to find the efficiency of heat engine is given by
η = 1 - T2 / T1
η = 1 - 135 / 325
η = 0.585
η = 58.5 %
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