Dropping one at a time

A helium-4 atom falls from a height h into a tank of gaseous helium atoms at 300 K. What is h in meters if the temperature of the helium atoms remains at 300 K after the falling atom enters the tank?

Details and assumptions

  • The acceleration of gravity is \(-9.8~m/s^2\).
  • As the atom falls it is in vacuum.
  • The atom starts from rest.

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