A heat engine absorbs 848 J of energy per
cycle from a high-temperature source. The
engine does 417 J of work during each cycle,
expelling 431 J as heat.
What is the engine’s eﬃciency?
physics - Elena, Thursday, April 25, 2013 at 2:21am
engine’s eﬃciency=A/Q =417/848=0.49