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Please show all work thanks :) An 8 nC charge is at the position (3,0) and...

Please show all work thanks :)

An 8 nC charge is at the position (3,0) and a -4 nC charge is at (-4,0). Positions are given in m.

(a) What is the magnitude of the electric field at position (0,-2)?

(b) What is the potential at the same position?

(c) At what point(s) on the x-axis does the electric field have a magnitude of 0?

(d) At what point(s) on the x-axis is the electric potential zero?

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