일반물리학 2 · Electric Potential · Problem 50
일반물리학 2 — Electric Potential: Problem 50
50 A charge of -9.0 nC is uniformly distributed around a thin plastic ring lying in a yz plane with the ring center at the origin. A -3.0 pC particle is located on the x axis at x = 3.0 m. For a ring radius of 1.5 m, how much work must an external force do on the particle to move it to the origin?
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