Newton's second law states that the force on a drag racer is equal to the mass of the car times its acceleration. one of the most important factors determining the cars acceleration is the tires on the car. this is because the force accelerating the car forward is provided by

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.