The electric force between two charged objects that are separated by 3 meters is 4,000 N. If the distance between the charged objects is increased to 6 meters, what is the new electric force?pl

Why do electron microscopes have higher resolving power than light microscopes?

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?