A particle of charge +1.00 x 10e-6 C is 15.0 cm distant from a second particle of charge -3.00 x 10e-6 C. Calculate the magnitude of the electrostatic force between the particles.

Answer 1

Learn and apply Coulomb's law.

F = k Q1*Q2/R^2

That will give you the magnitude of the force,
The direction of the force will be towards the other particle, since they have opposite signs.

Is your e-6 supposed to represent 10^-6? The latter would be a better way to write it. e-6 is easily confused with e^-6. E-6 is computer jargon.

Answer 2

56