heeeeeeeeeeeeeeelp with this equation plzzzzzzzzzzzzz...?

Question

what is the electric force of attraction (IN NEWTONS) between a proton and an electron? (assume the distance between them is
5 x 10^-11 meter)

a. 1.2 x 10^-9
b. 2.5 x 10^-9
c. 8.0 x 10^-8
d. 9.1 x 10^-8
e. 16.3 x 10^-5

Answer 1

well you didn't give the equation or list of equations if you don't know which one to use, so i'm sorry i cannot help you because i've forgotten much of my physics...