Problem P. 3998. (September 2007)
P. 3998. A cylinder with a piston in it encloses some air. Initially the volume of the air is V=0.1 m3, its temperature is 27 oC, and its pressure is p=113 kPa. The system is operated as a heat engine, while the air is taken through a cyclic process which consists of two isobaric processes at pressures of p and 2p and two isochoric processes at volumes of V and 3V.
a) What is the work done by the gas in the cyclic process?
b) What is the efficiency of this heat engine?
Deadline expired on 11 October 2007.
|107 students sent a solution.|
|4 points:||54 students.|
|3 points:||32 students.|
|2 points:||4 students.|
|1 point:||9 students.|
|0 point:||3 students.|
|Unfair, not evaluated:||5 solutions.|