Two bodies of masses m1 and m2 and specific heat capacities s1 and s2 are connected by a rod of length I, cross-sectional area A, thermal conductivity K and negligible heat capacity. The whole system is thermally insulated. At time t = 0, the temperature of the first body is T1 and the temperature of the second body is T2(T2> T1). Find the temperature difference between the two bodies at time t.
