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

Question

3 years ago

6

ure of 135 K. What is the efficiency of the heat engine? The answer should have three significant figures

2 answers:

Ilya [14] · Answer 1 · 2022-08-09T20:37:00+03:00

Ilya [14]3 years ago

5 0

The answer is "58.5"

LuckyWell [14K] · Answer 2 · 2022-08-09T23:01:13+03:00

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 %