Question: A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0 m 1.0 m 1.0 m box. The

A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0 m × 1.0 m × 1.0 m box. The diameter of a Ping-Pong ball is 3.0 cm. What is the mean free path between collisions? Give your answer in cm.

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