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Question: A spring with an unstrained length of 0.075 m and a spring constant of 2.3 N/m hangs vertically downward from the ceiling. A uniform electric field directed upward fills the region containing the spring. A sphere with a mass of 5.8 x 10-3 kg and a net charge of +5.8 mC is attached to the lower end of the spring. The spring is released slowly, until it reaches equilibrium. The equilibrium length of the spring is 0.060 m.
Part A: What is the magnitude of the external electric field?
Please show all steps to find the magnitude of the external electric field.
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