Been stuck on this problem plz me. will give brainiest. choose all the answers that apply. magnetism 1.) is caused by the spinning motion of electrons 2.) can be used to create electricity 3.) is a property of most metals 4.) is the force of attraction or repulsion between objects 5.) is measured in watts

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.