In the realm of kinetic theory of gases, the internal energy of gas is solely due to the sum of kinetic energies of all particles, since kinetic energy is frame dependent I was thinking whether a container having gas will heat up if I put it in a moving train, which is accelerating?


The total energy of the gas is the sum of its internal energy at the molecular level and its external energy at the macroscopic level.

The external kinetic energy is due to the velocity of the center of mass of the collection of molecules with respect to an external frame of reference. The internal kinetic energy does not depend on an external frame of reference.

The temperature of the container of gas will not increases due to the velocity of the container.

Hope this helps

  • $\begingroup$ Why the down vote? $\endgroup$ – Bob D Aug 17 '19 at 12:01
  • $\begingroup$ Possibly promoting posting questions without checking for duplicates first? $\endgroup$ – BioPhysicist Aug 17 '19 at 12:10
  • $\begingroup$ @Aaron Stevens Wasn’t aware of that responsibility. Can I find that policy somewhere? $\endgroup$ – Bob D Aug 17 '19 at 12:39
  • $\begingroup$ I don't think its an actual policy. I guess its the same idea as to answering homework questions where the OP has not given any effort. Its promoting similar activity from other users who can say "Well this person's questions got an answer." $\endgroup$ – BioPhysicist Aug 17 '19 at 13:07
  • 1
    $\begingroup$ It's up to you. If you think your answer is still useful, then I don't think one down vote should matter. $\endgroup$ – BioPhysicist Aug 17 '19 at 13:14

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