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P. 4210. 1 kg water of temperature 80 oC is poured onto 10 kg ice of temperature -30 oC which is in a thermally isolated container, and then 5 kg water vapour at a temperature of 120 oC is added.

What is the final state of the system?

(4 points)

Deadline expired on 11 January 2010.

Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldás. $\displaystyle 100 ^\circ$C-os víz (14,7 kg) és $\displaystyle 100 ^\circ$C-os gőz (1,3 kg).

Statistics on problem P. 4210.
 151 students sent a solution. 4 points: 120 students. 3 points: 14 students. 2 points: 2 students. 1 point: 7 students. 0 point: 3 students. Unfair, not evaluated: 5 solutions.

• Problems in Physics of KöMaL, December 2009

•  Támogatóink: Morgan Stanley