How much work are you doing if you push on a 40 N rock that won't move?

A player at first base catches a throw traveling 38 m/s. The baseball, which has a mass of 0.145 kg, comes to a complete stop in the glove after 0.14 s. Assuming the force of the glove was uniform, what force did the glove exert on the ball?

A toaster oven uses 67,500 joules of energy in 45 seconds to toast a piece of bread. What is the power of the oven?

A scientist is studying a sample of matter the matter has no definite shape or volume and it can conduct an electric current. The sample is most likely in which of the following states A. solid B. Liquid C. gas D. plasma

A rock is sliding down a hill. Assume that the hill is 20 meters high and the rock has a mass of 1,000 kilograms.

Are all these a chemical change Burn Dissolve Rust Explode

How do mountins building and volcanos relate to plate motion at convergent boundaries

A 20kg box is dropped 13m. how much work is done

Suppose a person whose mass is m is being held up against the wall with a constant tangential velocity v greater than the minimum necessary. Find the magnitude of the frictional force between the person and the wall

A ball is being rolled by a normal push of 1000N. it is opposed by friction which has a force of 0.3kN and air resistance which has a force of 23N. Calculate the resultant force.

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits.