IB Physics Entropy Change
/A tutorial sheet on the entropy change when two objects are placed in thermal contact. This sheet is based on a problem given by K F Riley in Problems for Physics Students. The solution was given by Jeffrey J Prentis in The Physics Teacher, vol 34, Oct 1996, pp 392-397.
- Two objects each of thermal capacity C are placed in thermal contact. The final equilibrium temperature of both objects is T. Initially the temperature of the "hot" object is T + ΔT and the temperature of the "cold" object is T - ΔT. Show that the change in entropy for this thermal process is C ln(T2/(T2-ΔT2))
