A 10 cm long thin glass rod is uniformly charged to 50 nc., Ask an Expert

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Q. A 1.20 kg object is held 1.35 m above a relaxed, massless vertical spring with a force constant of 340 N/m. The object is dropped onto the spring. How far does the object compress the spring?

Q. A 10-cm-long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 4.8 nC, is 4.2 cm from the center of the rod. What is the magnitude of the force of the bead?

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