Лаг1989 задача №8.9

The molecular beam falls perpendicularly to the wall, from which the molecules are reflected according to the law of absolutely elastic impact. The concentration of molecules in the beam n, the mass of molecules m₀, the speed of each molecule V. Find the pressure p experienced by the wall if: and the wall is stationary; b) the wall moves in the direction of its normal with velocity u.

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