Abasketball of mass 0.23 kg is thrown horizontally against a rigid vertical wall with a velocity of 20m/s. it rebounds with a velocity of 15m/s a)calculate the impulse of the force of the wall on the basketball show your work?

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

The energy produced as a result of this flow of electrons from atom to atom is called

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.