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Solve the all parts of following problem:

Problem: A plastic ball has a charge of 2.65 ÂµC and is attached to a string. When the ball is placed in a uniform horizontal electric field, the string makes an angle of 13.0° with the vertical and has a tension of 0.415 N.

Part A: What is the mass of the small plastic ball?

Part B: What is the strength of the electric field?

N/C

Please help for the above question, completely confused!! Show each steps if possible, Thanks.

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