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The Charges of Spheres Suspended by Massless Threads

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Two spheres, each having a mass of 50.0 mg, are suspended from a common point by massless threads 50.0 cm long. One of the spheres has been given a charge twice that of the other. The strings make an angle of 6.00o.
What are the charges on each of the spheres?

What kind of charge is on each sphere (Positive or Negative)?

See the attached diagram for a reference .

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This solution determines the kind of charge on two spheres.

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