Physics, 16.06.2020 20:57, lulustar13

An engine takes 3,000 J from a hot reservoir and expels 2,400 J to a cold reservoir. What is the thermal efficiency of the engine? 20% 45% 60% 80%

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An engine takes 3,000 J from a hot reservoir and expels 2,400 J to a cold reservoir. What is the the...