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A plastic rod of length = 20.0 cm is uniformly charged with a total charge of +30.0 C. The rod is formed into a

A plastic rod of length = 20.0 cm is uniformly charged with a total charge of +30.0 C. The rod is formed into a semicircle with its center at the origin of the xy plane (see figure below). What are the magnitude and direction of the electric field at the origin? magnitude N/C direction ---Select-- O

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