The shoe is in contact with the initially nearly stationary 0.500 kg football for 20.0 ms. What average force is exerted on the football in Newtons to give it a velocity of 22 m/s?

How much area is covered by land in the belt between 60 degrees and 65 degrees north latitude

1. Which of these is not a conservative force and does not have a form of potential energy connected with it? A. gravity B. electric attraction and repulsion C. friction D. magnetic attraction and repulsion 2.

The elastic potential energy is stored in a certain spring is 14 J when it is compressed 0.240m. the spring is now cut into three equal pieces. once of the pieces is then compressed by 0.150m.

What is the formula for work output?

Which of the following is not a valid equation for describing the behavior of gases? A. (P1/V1) = (P2/V2) B. PV = nRT C. P1V1 = P2V2 D. (V1/T1) = (V2/T2)

Luke investigated the heating of water

In the nucleus of all atoms are sub-atomic particles called protons and neutrons. all protons have a positive charge.

In a polar covalent bond

Lindsay is late to class and is running down the hallway at a speed of 2 m/s the length of the hallway is 150 meters. How long will it take her to run down the hallway?

Which of the following is evidence that groundwater causes erosion and deposition?