I'm trying to work out the force between a proton and an electron. I know I'm supposed to use the formula F = kQ(1)Q(2) / r^2.
k is given as 9.0 x 10^9 m/F and the distance between the particles is 5.0 x 10^-8 m.
I have the charge for the electron (1.6 x 10^-19 c), but what about the proton? There is an example in the book and the charge for Q(2) the charge is the same as Q(1), but I don't get the answer even if I do that. How do I do it?