Mathematical and Physical Journal
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Problem P. 4148. (March 2009)

P. 4148. A sample of ideal gas is taken from state A to state B in two different ways. The two states has the same temperature.

a) First it is compressed adiabatically (AC), and then it is cooled down such that its volume remains constant (CB);

b) First it is heated at constant volume (AD), then it is compressed isobarically (DB).

In which case do we perform less work? At state C or at state D will the temperature of the gas be greater?

(5 pont)

Deadline expired on April 14, 2009.


44 students sent a solution.
5 points:Bartha Zsolt, Földes Imre, Hartstein Máté, Laczkó Zoltán Balázs, Lovas Lia Izabella, Szabó 895 Dávid.
4 points:Egyed Zsombor.
3 points:16 students.
2 points:3 students.
1 point:4 students.
0 point:14 students.

Problems in Physics of KöMaL, March 2009