Two small plastic spheres each have a mass of 1.1 g and a charge of -50.0 nc . they are placed 2.1 cm apart (center to center). a. what is the magnitude of the electric force on each sphere? b. by what factor is the electric force on a sphere larger than its weight?

Part a)

F = 0.051 N

Part b)

Both spheres will follow Newton's III law of action reaction force so both sphere will have same force of equal magnitude.

Explanation:

Part a)

Electrostatic force between two charged spherical balls is given as

here we will have

here the distance between the center of two balls is given as

now we will have

Part b)

Both spheres will follow Newton's III law of action reaction force so both sphere will have same force of equal magnitude.

and 1and 1