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Three identical small Styrofoam balls (m = 2.00 g) are suspended from a fixed point by three nonconducting threads, each with a length of 50.0

Three identical small Styrofoam balls (m = 2.00 g) are suspended from a fixed point by three nonconducting threads, each with a length of 50.0 cm and with negligible mass. At equilibrium the three balls form an equilateral triangle with sides of 30.0 cm. What is the common charge q carried by each ball?

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