41. A line of positive charge is formed into a semicircle of radius R = 60.0 cm as shown in Figure P23.41. The charge per unit length along the semicircle is given by the expression A =1, cos 0. The total charge on the semicir- cle is 12.0 µC. Calculate the total force on a charge of 3.00 µC placed at the center R Figure P23.41 of curvature P.
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