Trying to work this one out.
If you have two charges Q1 and Q2 separated by a distance of x then how do you show what distance from the charge Q1 is the total electric from the two charges zero.
I know that Enet =E1 +E2 and if i use coulombs law i get:
KQ1/x^2 +KQ2/x^2
the K cancles...