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In the x-y plane, a charge of - 5.2 μC is on the x-axis at the point (-40 cm, 0), and a second charge of +7.5 μC is located on the y-axis at the point (0,30 cm).
a) Calculate the magnitude and direction of the resultant electric field E at (0 cm, 0 cm):
b) Determine (calculate) the magnitude and direction of the Electric Force Fe {using Fe = q E) acting on an ion with charge -2e if this particle were placed at the origin:
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