Which of the following produces a magnetic field?

motion of electrons

pairs of atoms

magnetic area

static charges

Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Arailroad car collides with and sticks to an identical railroad car that is initially at rest. after the collision, the total kinetic energy of the two cars is a) the same as before. b) half as much as before. c) one third as much as before. d) one fourth as much as before. e) twice as much as before.