A33-kg girl is bouncing on a trampoline. during a certain interval after she leaves the
surface of the trampoline, her kinetic energy decreases to 195 j from 425 j. how high
does she rise during this interval? neglect air resistance.

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.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

What is special about a dc circuit ?