Arectangular pipe, running parallel to the z-axis (from -oo to +oo), has three grounded metal sides, at y = 0, y-a, and x-0. the fourth side, at x - b, is maintained at a specified potential vo(

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.