A circular ring of radius a has a total charge Q uniformly distributed along the top half. (Q is distributed along the semicircle in… | Cheap Nursing Papers

A circular ring of radius a has a total charge Q uniformly distributed along the top half. (Q is distributed along the semicircle in…

The question is in the attached word document. This is about electric potential. It should be very short and simple, but I am having problems with it. The length of the radius is a, but I don’t think its labeled on picture.

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