Mathematical and Physical Journal
for High Schools
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Problem P. 4540. (May 2013)

P. 4540. 1 kg ice at a temperature of -30 oC is placed into a thermally insulated vessel filled with water of temperature 30 oC. Is it possible that no phase change occurs?

(3 pont)

Deadline expired on June 10, 2013.

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

Megoldásvázlat. Igen, elképzelhető, ha a víz tömege kb. 0,5 kg.


94 students sent a solution.
3 points:69 students.
2 points:15 students.
1 point:7 students.
0 point:3 students.

Problems in Physics of KöMaL, May 2013