Assuming luke has a mass of 90kg how much potential energy does he have just as he leaves the plane 7620 meters up? explain how you know.

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude