This is the angle that light strikes a surface relative to the normal, or an imaginary line perpendicular to the surface. The law of reflection states that this angle is equal to the angle of reflection.

James Joule (after whom the unit of energy is named) claimed that the water at the bottom of Niagara Falls should be warmer than the water at the top, 51 m above the bottom.

Reagan has a an empty glass cup. It has a mass of 0.3 kg. She drops the cup on the ground and it shatters into several pieces. If she collected all of the pieces of the cup, how much mass would all of the pieces have combined?

A joule which is a unit of work is equal to what? a. newton/meter b. newton/second c. newtonxsecond d. newtonxmeter

Suppose a 0.04-kg car traveling at 2.00 m/s can barely break an egg. What is the minimum sped a 0.08-kg car would need to have in order to break the egg?

A private jet flies the same distance in 9 hours that a commercial jet flies in 8 hours. If the speed of the commercial jet was 175mph less than 2 times the speed of the private jet, find the speed of each jet.

Two objects experience a 12 N electrical force between them. What force will the objects experience if the distance between them is doubled?

a submarine moving directly upward in the water at constant speed. The weight of the summer and it is 500,000 N. The submarines motors are off. The magnitude of the buoyant force acting on the submarine is

If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?

Which of the following is not the name of a space station that was in orbit around Earth?

Relationship between acceleration and free fall