Sphere A has an excess of 10 ^ 15 electrons and sphere B has an excess of 10 ^ 13 protons. They are separated by 2.0 m. What is the force between them?
The answer is B I used these equations then i putted it together. Charge = number of ( electron or proton ) x charge of ( electron or proton ) Force = k x (q1 q2)/r²