Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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# Problem P. 4564. (October 2013)

P. 4564. It is known that the atmospheric pressure at a height of 5.5 km is half, and at a height of 11 km is one-quarterth of the pressure measured at see-level (105 Pa). What is the density of the air at the top of a 3000 metre tall hill, at a temperature of -20 oC?

(4 pont)

Deadline expired on November 11, 2013.

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

Megoldásvázlat. 0,95 kg/$\displaystyle {\rm m}^3$.

### Statistics:

 125 students sent a solution. 4 points: 55 students. 3 points: 17 students. 2 points: 28 students. 1 point: 23 students. 0 point: 2 students.

Problems in Physics of KöMaL, October 2013