posted by kkpdiluvu .
An electron and a proton have charges of an equal magnitude but opposite sign of 1.6 10-19 C. If the electron and proton in a hydrogen atom are separated by a distance of 5.4 10-11 m, what are the magnitude and direction of the electrostatic force exerted on the electron by the proton?
I don't really understand Coulomb's Law... HELP!!
Show me your work.
am i even close?
the ^ should be e sorry...
That is correct, however, you have to square r.
So is -7.89e-8 my answer? Sorry I only have one more time to put it in my homework and I want to make sure I got it right this time!