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GO Flux and nonconducting shells. A charged particle is suspended at the center of two concentric spherical shells that are very thin and made of nonconducting material. Figure 23-37a shows a cross section. Figure 23-37b gives the net flux Φ through a Gaussian sphere centered on the particle, as a function of the radius r of the sphere. The scale of the vertical axis is set by Φs = 5.0 × 105 N · m2/C. (a) What is the charge of the central particle? What are the net charges of (b) shell A and (c) shell B?
Figure 23-37 Problem 14.

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