All waves are produced by something that is doing this

An aluminum cylinder, of height h=2ocm and of radius r=1ocm, rests with its base on a horizontal table.

When you kick a soccer ball, you apply a force f1 to the ball. what force f2 does the soccer ball exert on your foot? 1. there is no force f2. 2. f1 = f2, acting in the same direction 3. f1 = f2, acting in opposite directions 4. f2 < f1 5. f1 < f2?

A blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2. A green car arrives at the position of the stop-light 5 s after the light had turned green.

A projectile is launched at 37 degrees to the horizontal with a speed of 200 m/s from position A. How many seconds elapse after launch of the projectile before it returns to its original elevation at C? a. 12 s b. 16 s c. 41 s d. 33 s e. 24 s

How does electromagnetic affect people in the world?

A race car is traveling at 76 m/s when it slows down at 9 m/s^2 for 4 seconds. What is his new velocity

Humpty Dumpty (12 kg) sat on a wall (2 m high). What was his potential energy, before his great fall? A. 235.2 J B. 235.2 N C. 24 J D. 246.1 W

Explain how we were able to boil water at room temperature

A car drives at 30km/h around a roundabout. I still the car accelerating?

It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 6.7 g bullets at the rate of 78 bullets/min, and the speed of each bullet is 530 m/s.