When a sound wave hits a barrier like a wall,

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Atomic nuclei of almost all elements consist of