2. After performing an oil change on a vehicle, you may have to
the maintenance
reminder,
3. After the vehicle is driven, tire pressure
so do not let air out if the readings are slightly
higher than the recommended pressure.
4. Temporary spare tires often require
psi of air pressure.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?