K=Fr^2/q1q2 - is this correct? Sorry Im new to this!! Thanks :)
Answers and Replies
Yes, that's correct.
Fab thanks - should have more faith!!!
If you want to check your answer, just make up values for k, q1, q2, and r and find F. Then use that F along with the same values for q1, q2, and r and see if you get what you assigned to k originally.