KillGorack / Physics 2010 / A heat engine receives 6000 J of heat from its combustion process and loses 4000 J through the exhaust and friction. What is its efficiency?

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Question A heat engine receives 6000 J of heat from its combustion process and loses 4000 J through the exhaust and friction. What is its efficiency?
Answer 33%

Notes

User	Added	Note	e	d
KillGorack	2023-07-09 20:43:40	First, calculate the useful work done by the engine, which is the difference between the heat received and the heat lost: Work = Heat_received - Heat_lost = 6000 J - 4000 J = 2000 J Then the efficiency is given by: η = Work / Heat_received = 2000 J / 6000 J = 0.33 or 33% So, the efficiency of the engine is 33%.