The atmosphere contains 3 x 1025 molecules of air in one cubic meter and the mean speed of the molecules - Physics - Kinetic Theory

Question

The atmosphere contains 3 x 1025 molecules of air in
one cubic meter and the mean speed of the molecules is
103 m s-1 ind their mean free path and from
that calculate the number of collisions of a molecule with other
molecules in 1sec (i e collision frequency) (Take the diameter of
air molecules to be 2 x 10 -10m)

Somnath physics · Accepted Answer

Here n = 3 x 1025 d = 2 x 10 -10m = 103 m s-1