Thermodynamics, Statistical Physics, and Quantum Mechanics

THERMODYNAMICS AND STATISTICAL PHYSICS 11

4.17 Hole in Wall (Princeton)

A container is divided into two parts, I and II, by a partition with a small

hole of diameter Helium gas in the two parts is held at temperatures

K and respectively, through heating of the walls (see

Figure P.4.17).

How does the diameter d determine the physical process by which the

gases come to steady state?

What is the ratio of the mean free paths between the two parts

when

What is the ratio when

a)

b)

c)

4.18 Ballast Volume Pressure (Moscow Phys-Tech)

Two containers, I and II, filled with an ideal gas are connected by two
small openings of the same area, A, through a ballast volume B (see Fig-