Amerry-go-round on a playground consists of a horizontal solid disk with a weight of 810 n and a radius of 1.48 m. a child applies a force 50.5 n tangentially to the edge of the disk to start it from rest. what is the kinetic energy of the merry-go-round disk (in j) after 3.05 s?

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.

The plum pudding model of the atom states that ?

Why don't you see your reflection in water with waves or repples