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A small m = 2.7 g plastic ball is suspended by a l = 24.60 cm string in a uniform electric field of E = 1.10 104 N/C as shown below.

A small m = 2.7 g plastic ball is suspended by a l = 24.60 cm string in a uniform electric field of E = 1.10 104 N/C as shown below.

If the ball is in equilibrium when the string makes a θ = 20° angle with the vertical as indicated, what is the net charge on the ball?
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