Magyar Information Contest Journal Articles

# Problem P. 4460. (September 2012)

P. 4460. 31.4 J of heat is given to a sample of ideal gas. Because of this the gas expands from a volume of 0.3 litres to 0.8 litres, at a constant pressure of 1.57.104 Pa.

a) Determine the change in the internal energy.

b) What is the degree of freedom of the gas?

(4 pont)

Deadline expired on 10 October 2012.

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

Megoldásvázlat. a) E=23,55 J;

b) f=6.

### Statistics:

 168 students sent a solution. 4 points: 145 students. 3 points: 4 students. 2 points: 9 students. 1 point: 5 students. 0 point: 5 students.

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