Question

three equal charges each of 2.0×10^-6 are fixed at three corner of an equilateral triangle of side 5cm .find the coulomb force experience due to other two charges

Answer 1

d = .05 meter

Fx = k [Q^2/.05^2]cos 30 from each
Fy cancels
so it is just 2Fx (repels of course because same sign)

Answer 2

I don't know the answer