Refraction occurs when a wave changes its a) color. b) frequency. c) intensity. d) speed.

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

How much work does the charge escalator do to move 2.30 μc of charge from the negative terminal to the positive terminal of a 3.00 v battery?

In what direction does the medium move relative to the direction of the wave? explain.