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

Answer:

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.

Explanation:

Hi

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