Calculate the electric field at the point x meters on the axis of the ring if the total charge on the ring = Q, and there is a point charge of strength q in the center of the ring. Given: Q = 33 nC. q = -18 nC. x = 1.6 m. radius=a=0.6 m.

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

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 heliocentric and the geocentric models of the solar system included these central principles