KöMaL - Mathematical and Physical Journal for Secondary Schools
Hungarian version Information Contest Journal Articles News
Conditions
Entry form to the contest
Problems and solutions
Results of the competition
Problems of the previous years

 

 

Order KöMaL!

Competitions Portal

P. 3900. A body, whose initial temperature is T0 is put to thermal contact with the heat reservoirs of temperatures T_{1}, T_{2},\ldots, T_{n-1} and finally connected with the heat reservoir of temperature Tn=T0. Show that Clausius' statement:


\sum_{i=1}^{n}\frac{Q_{i}}{T_{i}}\le 0

holds true. Qi is the heat absorbed by the body from that heat reservoir whose temperature is Ti. Assume that the volume of the body cannot change.

(5 points)

Deadline expired on 12 June 2006.


Statistics on problem P. 3900.
31 students sent a solution.
5 points:Konczer József, Máté István Mátyás, Megyeri Balázs, Nagy 555 Zoltán, Széchenyi Gábor, Werner Miklós.
4 points:Almási 270 Gábor András, Balogh Máté, Blázsik Zoltán, Csire Gábor, Dudás János, Engedy Balázs, Farkas Ádám László, Gresits Iván, Győri Tamás Noé, Hegyi Ádám, Kónya 495 Gábor, Legoza József, Molnár 811 Kristóf, Nagy 224 Csaba, Nagy 317 Péter, Pásztor Attila, Pósa László, Roósz Gergő, Szabó 001 Áron, Szirmai Péter, Szolnoki Lénárd, Szűcs Gergely, Takátsy Balázs, Tolner Ferenc.
2 points:1 student.


  • Problems in Physics of KöMaL, May 2006

  • Our web pages are supported by: Ericsson   Google   Emberi ErĹ‘forrás TámogatáskezelĹ‘   Emberi ErĹ‘források MinisztĂ©riuma   OktatáskutatĂł Ă©s FejlesztĹ‘ IntĂ©zet   Nemzeti TehetsĂ©g Program     Nemzeti
Kulturális Alap   ELTE