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    Electrostatics: Coulomb Force

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    Three identical charges +q and a fourth charge -q form a square of side a.

    a) Find the magnitude of the electric force on a charge Q placed at the center of the square.
    b) Describe the direction of this force.

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    Solution Preview

    Please see the attachment.

    Coulomb's Law
    ________________________________________
    Three identical charges +q and a fourth charge -q form a square of side a.

    a) Find the magnitude of the electric force on a charge Q placed at the center of the square.
    b) ...

    Solution Summary

    Three charges are at the corners of a square. The force on the charge at the center is calculated.

    $2.49

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