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Two positive point charges each have a charge of +q and are fixed on the y axis at y = +a and y = -a. (Use the following as necessary: k, q, a, and x.)

(a) Find the electric potential at any point on the x axis.

V(x) =______________?________________

(b) Use your result in part (a) to find the electric field at any point on the x axis.

(x) = ______________?__________________

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