Which of the following statements about drag is true?
Objects with a low drag coefficient will have more drag force than objects with a higher drag coefficient.
Streamlining will have no effect on drag coefficients.
Four variables affect drag.
A slower-moving car will experience more drag than a faster-moving car

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?