System A and system B are thermally isolated from everything else but exchange heat with each other. System A is initially at 300 K and system B is initially at 400 K. System A has mass 2.0 kg and specific heat 1000 J/kg K. System B has mass 1.0 kg and the same specific heat of 1000 J/ kg K. What is the net (total) change in entropy from the initial state to the final equilibrium state? Hint: you need to determine the final equilibrium temperature. B

System A and system B are thermally isolated from everything else but exchange heat with each other. System A is initially at 300 K and system B is initially at 400 K. System A has mass 2.0 kg and specific heat 1000 J/kg K. System B has mass 1.0 kg and the same specific heat of 1000 J/ kg K. What is the net (total) change in entropy from the initial state to the final equilibrium state? Hint: you need to determine the final equilibrium temperature. B