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An infinitely long, uniformly charged straight line has linear charge density ?1 coul/m. A straight rod...

An infinitely long, uniformly charged straight line has linear charge density ?1 coul/m. A straight rod of length 'b' lies in the plane of the straight line and perpendicular to it, with its enared end at distance 'a' from the line. The charge density on the rod varies with distance 'y', measured from the lower end, according to ?(on rod) = (?2*b)/(y+a), where ?2 is a constant. Find the electrical force exerted on the rod by the charge on the infinite straight line, in the ?1, ?2, a, and b, and constants like ?0.

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