Asmall metal sphere has a mass of 0.19 g and a charge of -21.0 nc. it is 10.0 cm directly above an identical sphere that has the same charge. this lower sphere is fixed and cannot move. if the upper sphere is released, it will begin to fall.
what is the magnitude of its initial acceleration?

The magnitude of its initial acceleration is 7.50 m/s²

Explanation:

Given that,

Mass of sphere = 0.19 g

Charge = -21.0 nC

Distance = 10.0 cm

We need to calculate the electric force

Using formula of force

Put the value into the formula

We need to calculate the net force

Using formula of net force

Put the value into the formula

We need to calculate the magnitude of its initial acceleration

Using newton's second law of motion

Put the value into the formula

Hence, The magnitude of its initial acceleration is 7.50 m/s²

the body's situation won't change the forces are equal opposit and on the same body

i believe the answer is electric potential.

explanation: