Temperature due to translational energy of molecules?

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SUMMARY

Temperature is fundamentally defined as the measure of the average translational kinetic energy (KE) of molecules within a system, specifically assessed in the center of mass frame. The discussion clarifies that while macroscopic motion of an object involves translational movement, it does not influence the random motion of the molecules, which is what temperature quantifies. Therefore, temperature remains unaffected by the object's overall velocity, excluding factors like friction.

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  • Understanding of kinetic energy concepts
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  • Knowledge of thermodynamic principles
  • Basic grasp of the center of mass frame in physics
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deepthishan
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Hi there,

Ok from my lectures: Temperature is due to the Kinetic energy of molecules. Kinetic energy can be due to vibrational, rotational, translational and/or electronic motion.

Now when you move an object from one place to another, aren't the molecules undergoing a nett translation (granted it's macroscopic but still there's a velocity)? So isn't there temperature involved here (however tiny)-not counting friction !

Thanks!
:)
 
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No. Temperature is a measure of the average translational KE of molecules as measured in the center of mass frame of the system. (The macroscopic motion of an object doesn't effect the random motion of its molecules, which is what temperature relates to.)
 
Thank you for the prompt reply Doc Al!
 

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