Two objects of equal mass in thermal contact constitute an isolated system. The temperature initial of the two objects is respectively t ° C and 0 ° C; assuming no changes occur state, what is the equilibrium temperature if the specific heat of the hottest object is 9 times that the coldest object? A) t ° C B) 0.1t ° C C) 0.9t ° C D) 0.5t ° C E) 2t ° C

Hi!

Answer is C), how do you solve?