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Math Help - net electric field.

  1. #1
    Senior Member
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    net electric field.

    Two charges are located on the x axis:

    q1 = +4.0 ÁC at x1 = +4.0 cm, and q2 = +4.0 ÁC at x2 = -4.0 cm.

    Two other charges are located on the y axis: q3 = +4.0 ÁC at y3 = +5.0 cm, and q4 = -7.0 ÁC at y4 = +7.0 cm.

    Find the net electric field (magnitude and direction) at the origin.

    magnitude in N/C
    and the direction ░ (measured counter clockwise from the x axis)

    not sure how to use the x and y axis Coloumb to help.
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  2. #2
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    The x,y axes are used in the problem to tell u the distance of each charge to the origin.

    Now you have to find the electrical field generated by each charge at the origin, and then do a vector sum.
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