A 0.01-kg bob, attached to a string with length L = 1.2 m, has a total energy of 8 J. The angular speed of the bob, θ', when the kinetic energy equals to the half of the potential energy, (K=U/2), is:

Explain what makes a passenger in a turning car slide toward the door. critical thinking

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

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