Mathematical and Physical Journal
for High Schools
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Problem P. 4415. (February 2012)

P. 4415. A sample of water is initially has a temperature of 14 oC. It is heated to its boiling point at atmospheric pressure, and then it is boiled down. What per cent of the added thermal energy is the work done by the expanding gas?

(4 pont)

Deadline expired on March 12, 2012.

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

Megoldás. Kb. 6 százaléka.


132 students sent a solution.
4 points:76 students.
3 points:17 students.
2 points:8 students.
1 point:28 students.
0 point:3 students.

Problems in Physics of KöMaL, February 2012