Two tiny balls of identical mass m and identical charge q hang from non-conducting threads of length L as pictured. The balls are separated by an angle 2θ (a) Show that sin^2(θ) tan(θ) = q2 / 16πε0mgL^2  (b) If L = 100 cm, m = 0.05 kg, and the distance x between the balls is x = 3 cm, what is |q|?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.