A certain heat engine does 102 kj of work and 95 kj of heat, Ask an Expert

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A certain heat engine does 10.2 kJ of work and 9.5 kJ of heat is transfered to the environment in a cyclical process.

Given: W = 10.2 kJ

Qc = 9.5 kJ

Q1) What was the heat transfer into this engine in kJ?

Dealta U=?

q2) What was the engine's efficiency in percent?

Eff=?

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