4.2 Heat Engines
Cyclic devices drawing heat from a hot reservoir, dumping the remainder to a cold one, with efficiency computed from the work per cycle of an ideal gas.
3 exercises
4.2 Exercise 3
In performing 100.0 J of work, an engine discharges 50.0 J of heat. What is the efficiency of the engine?
4.2 Exercise 5
It is found that an engine discharges 100.0 J while absorbing 125.0 J each cycle of operation. (a) What is the efficiency of the engine? (b) How much work does it perform per cycle?
4.2 Exercise 7
An engine absorbs three times as much heat as it discharges. The work done by the engine per cycle is 50 J. Calculate (a) the efficiency of the engine, (b) the heat absorbed per cycle, and (c) the heat discharged per cycle.
Adapted from University Physics Volume 2 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 2. Imported at revision db44eb9.