A 8.20 μC charged 1.00 g cork ball is suspended vertically on a 1.100 m long light string in the presence of a uniform downward-directed electric field of magnitude E = 8.50x105 N/C. If the ball is displaced slightly from the vertical, it oscillates like a simple pendulum. (c) Determine the acceleration of the ball due to the combined effects of the gravitational and electric fields. That is, what is the effective acceleration due to both gravity and the electric field? (What is the new "g" that you should use in the period equatio

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