What mathematical expression do you use to calculate the pressure due to liquid at a given depth? Explain each term.

Amplitude is a measure of a waves a; speed b; distance c; energy d; frequency

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

What happens when a rubber rod is rubbed with a piece of fur?