Mathematical and Physical Journal
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Problem P. 4417. (February 2012)

P. 4417. The best vacuum which can be created in a laboratory at room temperature is 10-10 Pa. How many molecules are there in 1 cm3 of this ``void''? (In the interstellar medium there is 1 proton in each cm3)

(4 pont)

Deadline expired on March 12, 2012.

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

Megoldás. Nagyságrendben \(\displaystyle 10^{4}\) molekula köbcentiméterenként.


151 students sent a solution.
4 points:132 students.
3 points:14 students.
2 points:4 students.
0 point:1 student.

Problems in Physics of KöMaL, February 2012