Question: A point charge is on the x-axis at x = 1.20 m. A second point charge Q is on the x-axis at -0.600. What must

A point charge is on the x-axis at x = 1.20 m. A second point charge Q is on the x-axis at -0.600. What must be the sign and magnitude of Q for the resultant electric field at the origin to be

(a) 45.0 N/C in the +x direction,

(b) 45.0 N/C in the -x direction?

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