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Two point charges, –10 nC and +18 nC , are held fixed a distance 0.40 m...

Two point charges, –10 nC and +18 nC , are held fixed a distance 0.40 m apart. Assume that both charges lie on x -axis, for the -10 nC x = 0 and for the +18 nC charge x = 0.40 m .

Part A: Where can a +20 nC charge be placed so that the net force on it is zero? Express your answer to two significant figures and include the appropriate units.

Part B: Repeat part A if the third charge is –20 nC . Express your answer to two significant figures and include the appropriate units.

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Answer #1

A. x=-1.17 m B. -1.17 m

Elaetrlc field s zeso つC & Same as Part A

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