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  1. ...0.6 + kq^2/0.6666 where k is the electrostatic constant (= 9x10^9 N.m^2/ C ^2) and 0.6666 m is the length of the diagonal of the rectangle . hence, W = kq^2(1/0.29 + 1/0.6 + 1/0.6666) = 6.615(kq^2) substitute the...