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A charged cork ball of mass 2.70 g is suspended on a light string in the presence of a uniform electric field as shown

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A charged cork ball of mass 2.70 g is suspended on a light string in the presence of a uniform electric field as shown in the figure below. When E (4.00 + 5.20 j) x 105 N/C, the ball is equilibrium at 6 = 37.0, + i (a) Find the charge on the ball. C (b) Find the tension in the string. N

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