Mathematical and Physical Journal
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# Problem P. 4492. (December 2012)

P. 4492. A sample of monatomic ideal gas is taken through the cyclic process shown in the figure. The temperature of the gas at state A is TA=180 K. What is the temperature of the gas at state C if the efficiency of the heat engine of this cyclic process is =2/9?

(4 pont)

Deadline expired on January 10, 2013.

Sorry, the solution is available only in Hungarian. Google translation

Megoldásvázlat. $\displaystyle T_C=1620$ K.

### Statistics:

 66 students sent a solution. 4 points: 52 students. 3 points: 1 student. 2 points: 5 students. 1 point: 6 students. Unfair, not evaluated: 2 solutionss.

Problems in Physics of KöMaL, December 2012