Mathematical and Physical Journal
for High Schools
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Problem P. 4551. (September 2013)

P. 4551. There is a massless piston, which can move frictionlessly, in the middle of a 1-metre long, horizontal tube, closed at both of its ends. In the left chamber there is a sample of Oxygen gas, and in the right chamber there is Hydrogen gas at the same tempereture. The mass of the hydrogen is one-fourth of that of the Oxygen. Where is the equilibrium position of the piston?

(3 pont)

Deadline expired on October 10, 2013.

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

Megoldásvázlat. A cső 80 cm hosszú részét tölti ki a hidrogén, 20 cm-nyi hosszat pedig az oxigén.


175 students sent a solution.
3 points:113 students.
2 points:39 students.
1 point:15 students.
0 point:8 students.

Problems in Physics of KöMaL, September 2013