PLEASE HELP ME! Calculate the electrostatic force between two particles: one has a charge of +2.8 x 10^-4 C and the other has a charge of +4 x 10^-6 C. The two charges are 0.45 m apart.

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The dot diagram represents the motion of the motorcycle as it moves from left to right

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.