1. The problem statement, all variables and given/known data Give an physical explanation to why the specific heat capacity goes to zero as temperature goes to zero. 2. Relevant equations 3. The attempt at a solution I was simply thinking that around absolute zero the average kinetic energy of the particles should be zero, meaning that the atoms in the solid would be pretty much at a halt. Thus, even if we just add an infinitesimal amount of heat the increase in average kinetic energy would be relatively big, implying that the specific heat capacity goes to zero. Even I myself think that that last part is flawed, so I'm looking for any better explanation of this fenomenon. Any help appreciated!