Is a spring that is stretched a kinetic, potential or both?

What formed the rock of the canadian shield?

A 12 kg hanging sculpture is suspended by a 90-cm-long, 5.0 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency. What is the frequency of the hum?

What happens when a spinning ice skater draws in her outstretched arms?

If an object moves with constant (non-zero) acceleration, then which, if any, of the following statements about its motion is/are true? The position may be increasing or decreasing. A: True B: False The acceleration may be increasing or decreasing.

Calculate the power of a 120V drill that uses 15A of electricity.

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.