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Three charges are at the corners of an isosceles triangle as shown in Fig. The -5.00-mC charges form a dipole.
(a) Find the force (magnitude and direction) the -10.00-mC charge exerts on the dipole.
(b) For an axis perpendicular to the line connecting the -5.00-mC charges at the mid- point of this line, find the torque (magnitude and direction) exerted on the dipole by the – 10.00-mC charge.