Mathematical and Physical Journal
for High Schools
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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.

### Statistics:

 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