A certain heat engine does 9.8 kJ of work and 8.5 kJ of heat

Last updated: 7/28/2022

A certain heat engine does 9.8 kJ of work and 8.5 kJ of heat is transferred to the environment in a cyclical process. Part (a) What was the heat transfer into this engine in kJ? Part (b) What was the engine's efficiency in percent?