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A point charge of 1 uC is located at x= -3.0 cm and a second point...

A point charge of 1 uC is located at x= -3.0 cm and a second point charge of -9 uC is at x= 4.0cm. Where should the third charge of +6.0 uC be placed so that the elctric field is x=0 is zero?

answer: __ cm

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Answer #1

Note that since the direction is toward left for 6uC, it must be to the right of zero. Thus the value of x is positive.

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