Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem P. 4721. (March 2015)

P. 4721. The working substance of a heat engine is a certain amount of monatomic ideal gas. The gas is taken through the cyclic process shown in the figure - which consists of two isobaric and two isochoric processes. What can the greatest thermodynamic efficiency of this engine be if in each cycle the useful work is the same as the internal energy of the gas at its initial state, which is \(\displaystyle \frac32 p_0V_0\)?

(5 pont)

Deadline expired on April 10, 2015.


Statistics:

45 students sent a solution.
5 points:Asztalos Bogdán, Balogh Menyhért, Bartók Imre, Bekes Nándor, Berta Dénes, Blum Balázs, Boldizsár Bálint, Csathó Botond, Csire Roland, Fehér Balázs, Fekete Panna, Forrai Botond, Gróf Tamás, Holczer András, Iván Balázs, Jakus Balázs István, Kasza Bence, Kormányos Hanna Rebeka, Kovács Péter Tamás, Körtefái Dóra, Lőrincz Zoltán, Marosvári Kristóf, Molnár 157 Marcell, Németh Flóra Boróka, Olosz Balázs, Öreg Botond, Pázmán Előd, Sal Kristóf, Szántó Benedek, Szász Norbert Csaba, Szentivánszki Soma , Szépfalvi Bálint, Varju Ákos, Vastag Balázs, Wiandt Péter.
4 points:Tanner Martin, Trócsányi Péter, Varga-Umbrich Eszter.
3 points:5 students.
2 points:1 student.
1 point:1 student.

Problems in Physics of KöMaL, March 2015