Question: please solve. all the information is there. Problem 3: A thin glass rod is bent into a semicircle of radius r. A charge +q is
please solve. all the information is there.

Problem 3: A thin glass rod is bent into a semicircle of radius r. A charge +q is uniformly.F distributed along the upper belt", and a charge -q is uniformly distributed along the lower half, as shown. Find the magnitude and direction of the electric eld E at P, the center of the semicircle. (Hint: you might be able to solve this using your result from problem 3)
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