The mass of the heavier block is 24 kg and the mass of the lighter blocks is 12 kg and the magnitude of the force of the connecting string on the smaller block is 19 n. assume: g = 9.8 m/s 2 and the horizontal surface on which the objects slide is frictionless. 12 kg 24 kg 19 n f determine the force f. answer in units of n.

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.