Name three states in which matter can be found

In what direction does the medium move relative to the direction of the wave? explain.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.