Two spheres A and B are placed in the arrangement shown below. (a) If mA : 4m and me : 8m, where on the dashed line should a third sphere C of mass 8m be placed so that the net force on it is zero? 0 between A and B, closer to B 0 between A and B, closer to A Q) to the right of A O at the midpoint between A and B O to the left of B X What should be the direction of the force due to each sphere for the net force on the third mass to be zero? [b] If the distance between the two spheres A and B is 500 cm, find the location for the third sphere C so that the net force on it is zero. 220.6? X What should be the magnitude of the force exerted by B on C compared to the magnitude of the force exerted by A on C? cm to the right of sphere B