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A charge of -3.35 nC and a charge of -7.00 nC are separated by a distance of 40.0 cm. Find the position at which a third charge of +7.10 nC can be placed so that the net electrostatic force on it is zero.

  • physics - ,

    well, it is fairly obvious a positive charge between two negatives can be placed at a zero force.

    Let x be where the 3.35nC charge is.

    Then ...


    solve for x.

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