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P. 3919. There is a vertical cylinder filled with a sample of ideal gas in a thermostat. A horizontal piston which can move easily, splits the cylinder into two parts. The volume of the upper part is 4 times as much as the volume of the part below. If the cylinder is placed to a thermostat at a temperature of 400 K the ratio of the volumes of the upper and lower parts will be 3:1. Find the ratio of the number of molecules of the gas in the two parts of the cylinder.

(4 points)

Deadline expired on 13 November 2006.

Statistics on problem P. 3919.
 111 students sent a solution. 4 points: 67 students. 3 points: 16 students. 2 points: 4 students. 1 point: 4 students. 0 point: 10 students. Unfair, not evaluated: 10 solutions.

• Problems in Physics of KöMaL, October 2006

•  Támogatóink: Morgan Stanley