With what speed must m1 rotate in a circle of radius r if m2 is to remain hanging at rest?

Describe your motion in terms of velocity and acceleration as you ride in a car down the street, come to a red light, wait for the green light and then start off again.

Which of the following is true of machines? A. Machines increase the amount of force required to do a task. B. Machines reduce the total amount of work required to do a task. C. Machines increase the total amount of work required to do a task. D.

When light is reflected, the incident rays are bent and change direction. A. True B. False

Why pressure above the surface is greater than in the air

When light is refracted, the amount that the light bends depends on what

If a wave were to hit a flexible, moveable surface what will it do?

How powerful is 4kj?

A series of steps that allows someone to conduct an experiment are called a

A coach is hitting pop flies to the outfielders. if the baseball (m = 145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 50 m/s, what is the average force acting on the ball?

The two major ways to transfer charge between two objects are