When a current flows through a metal wire, the moving charges are:. a. negative metal ions.
b. positive metal ions.
c. only electrons.
d. only protons.
e. both protons and electrons.

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

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?

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?