Mathematical and Physical Journal
for High Schools
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Problem P. 4428. (March 2012)

P. 4428. In two containers of equal volume there are two samples of gas: Helium and Hydrogen. The samples have equal internal energy and equal number of particles. a) What is the ratio of the pressure of the gases? b) What is the ratio of the average speed of the particles?

(4 pont)

Deadline expired on April 10, 2012.

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

Megoldás. \(\displaystyle a)\) A nyomások aránya \(\displaystyle 3:5\).

\(\displaystyle b)\) A (négyzetes) átlagsebességek aránya \(\displaystyle \sqrt{6/5}\).


150 students sent a solution.
4 points:60 students.
3 points:23 students.
2 points:41 students.
1 point:8 students.
0 point:11 students.
Unfair, not evaluated:7 solutions.

Problems in Physics of KöMaL, March 2012