Answer to Question #205813 in Classical Mechanics for danial

Question

he energy input to an engine is 3.00 times greater than

the work it performs. What is its thermal efficiency?

Answer 1

$${\rm Efficiency =\frac{output\: work}{input\: energy}}$$ $$=\frac{W}{3W}=\frac{1}{3}=33.3\%$$