Question

A 7.80-nc charge is located 1.81 m from a 4.30-nc point charge. (a) Find the magnitude of the electrostatic force that one charge exerts on the other. N (b) Is the force attractive or repulsive? O attractive O repulsive

Answer 1

The magnitude of the electrostatic force that one charge exerts on the other is
`9.2x10^(-8) N`, due both of the charges are positive the force is repulsive.

Step-by-step explanation:

Hi

We use the formula
`F= k_(e)(q_(1) *q_(2) )/(d^(2) )`, where
`k_(e)=8.99 X10^(9)(N*m^(2) )/(C^(2) )` is a constant, so we have
`F=(8.99 X10^(9)(N*m^(2) )/(C^(2) )  ) ((7.80X10^(-9) C)(4.30X10^(-9)C))/((1.81m)^(2) )  =9.2X10^(-8)N`