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Suppose the two people in the previous problem move toward each other. Calculate the magnitude of the electrical force of one on the other when their separation is reduced by a factor of 10. 8. 9. Two pith balls shown in the diagram below have a mass of 1.0 g each and have equal charges. One pith ball is suspended by an insulating thread. The other charge is brought to within 3.0 cm. of the suspended ball (r-0.03 m). The suspended pith ball is deflected from its rest position until the thread forms an angle of 30 with the vertical. At this angle, the ball is in equilibrium. a) Draw a force diagram depicting the forces acting on the suspended ball. Calculate (b) mg (c) Fe (d) the charge on the pith balls 30 003m
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