A thin glass rod is bent into a semicircle of radius R 18.1 cm. A charge Q=4.81 nC is uniformly distributed along the upper half, and a charge -Q is uniformly distributed along the lower half as shown in the figure. Find the y-component of the electric field at point P, the center of the semicircle. 1683 10 3NC Submit Answer Incorrect. Tries 19/99 Previous Tries
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