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A charge +q is at the origin. A charge -2q is at x = 4.10 m...

A charge +q is at the origin. A charge -2q is at x = 4.10 m on the +x axis.

(a) For what finite value of x is the electric field zero?

(b) For what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V = 0 at r = ∞.)

Smallest value of x: ???

Largest value of x: ???

(In meters)

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