Mathematical and Physical Journal
for High Schools
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Problem P. 4293. (November 2010)

P. 4293. In a dry sauna the temperature is 100 oC, while in a concert hall, which has 2000-times bigger volume, the temperature is 20 oC. By what factor is the internal energy of the air in the concert hall bigger than that of in the sauna?

(4 pont)

Deadline expired on December 10, 2010.


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

Megoldás. A belső energia a \(\displaystyle pV\) szorzattal arányos, emiatt a koncertterem levegőjének belső energiája 2000-szer nagyobb, mint a szaunáé. (Adott térfogatú gáz melegítésekor a mólszám változik, a belső energia nem.)


Statistics:

145 students sent a solution.
4 points:119 students.
3 points:4 students.
2 points:1 student.
1 point:2 students.
0 point:16 students.
Unfair, not evaluated:3 solutions.

Problems in Physics of KöMaL, November 2010