A heat engine receives 7 900 J of heat from its combustion process and loses 3 200 J through the exhaust and friction.What is its efficiency?

Question

A heat engine receives 7 900 J of heat from its combustion process and loses 3 200 J through the exhaust and friction.What is its efficiency?​

Quizplus · Accepted Answer

The efficiency of a heat engine is calculated by the formula: Efficiency = (Energy Output / Energy Input) * 100. In this case, Energy Output = 7 900 J - 3 200 J = 4 700 J, and Energy Input = 7 900 J. Therefore, Efficiency = (4 700 / 7 900) * 100 = 59%.

A Heat Engine Receives 7 900 J of Heat from Its