A 35.0 g bullet moving at 475 m/s strikes a 4.3 kg wooden block that is at rest. The bullet passes through the block, leaving at 280 m/s. How fast is the block moving when the bullet leaves? (WILL GIVE BRAINLIEST)​

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.