Mathematical and Physical Journal
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Problem P. 4189. (October 2009)

P. 4189. 10 cm3 water is poured into a container of volume 400 cm3 at normal atmospheric pressure and at room temperature (20 oC). Then the container is closed hermetically and heated to a temperature of 150 oC. By what amount will the volume of the water change? (Do not consider the change in the volume of the container.)

(4 pont)

Deadline expired on November 10, 2009.


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

Megoldás. A víz térfogata mintegy \(\displaystyle 0{,}2~{\rm cm}^3\)-rel csökken.


Statistics:

75 students sent a solution.
4 points:Balogh Gábor, Barta Szilveszter Marcell, Farkas Martin, Galgóczi Gábor, Galzó Ákos Ferenc, Hartstein Máté, Kószó Simon, Kovács Attila, Kungl Ákos Ferenc, Laczkó Zoltán Balázs, Patartics Bálint, Pázmán Koppány, Pós Eszter Sarolta, Pusztaházi 124 Luca Sára, Rácz Viktor, Sánta 07 Mariann 16 , Szentgyörgyi 994 Rita, Tamási Mátyás, Vörös Beáta, Wang Daqian.
3 points:Baumgartner Róbert, Kovács 616 Philip, Lőrincz Dóra, Szikszai Lőrinc, Vuchetich Bálint.
2 points:6 students.
1 point:13 students.
0 point:27 students.
Unfair, not evaluated:4 solutions.

Problems in Physics of KöMaL, October 2009