Question

Two objects in contact are in thermal equilibrium if their particles possess the same average kinetic energy.
True
False

Answer 1

False
............... if their particles possess the same average internal energy.

Also make sure that you have another reference, not just me.

Answer 2

Thans!

Answer 3

It is actually true.
Proof: The equipartition theorem says that at equilibrium the average kinetic energy of each particle in a system is equal to (3/2) kT, where k is Boltzmann's constant. Equal temperatures implies equal kinetic energy per particle.