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kilnvzol
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Homework Statement
A charged particle is suspended at the center of two concentric spherical shells that are very thin and made of nonconducting material. Figure (a) shows a cross section. Figure (b) 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 = 6.0 × 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? (in µC)
http://edugen.wileyplus.com/edugen/courses/crs7165/art/qb/qu/c23/pict_23_12.gif
Homework Equations
EI = q(enc)
The Attempt at a Solution
For part a. I multiplied (2E5)(8.85E-12) = 1.77µC
For part b. I did -(6E5)(8.85E-12)-1.77E-6 = -7.08µC
For part c. I did (6E5)(8.85E-12)+(7.08E-6)-(1.77E-6) = 10.62µC
I don't know what I did wrong. :(