What best describes the speed of light waves and solids, liquids, and gases?

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?

Ways that industry and agriculture use physical properties to separate substances

You can decrease the resistance of a length of wire by