Two trains are blowing their whistles. the first train is stationary, and the second one is moving toward tom. if the two whistles are identical, how do the two whistles sound to tom?

The solid that is formed and usually sinks to the bottom of a solution is the

Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.

Coal contains energy. a. light b. kinetic c. chemical d. mechanical