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A 2.9 µC is at x = 0 and a -2.0 µC charge is at x = 3.5 cm. (Let V = 0 at r = .)

(a) At what point along the line joining them is the electric field zero?

x = cm

(b) At what points is the potential zero?

x = cm (smaller x value)

x = cm (larger x value)

a) [(2.9e-6 C)k]/(.055+ x)^2 = [k(2e-6)]/(x^2)

k's cancel.. and then use quadratic to find it but the values aren't the right ones... What am I missing???

Any help would be appreciated!!!

Thanks!!