A 3 microcoulomb charge is at the coordinated 34mm a -4, Ask an Expert

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A 3 microcoulomb charge is at the coordinated (3,4)mm. A -4 microcoulomb charge is at the coordinates (-2,5)mm. What is the force vector in polar coordinates on the 3 microcoulomb charge? The 3 microcoulomb charge is removed. There is only a -4 microcoulomb charge at the coordinates (-2,5)mm. What is the Electric field vector in polar coordinates at the origin?

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