Explain why we draw straight lines to show rays of light.

Determine the maximum r-value of the polar equation r =3+3 cos 0

How is zig zagging a form of acceleration?

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?