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## Homework Statement

The inner radius of a spherical shell is 14.6 cm, and the outer radius is 15.2 cm. The shell carries a charge of 5.35 × 10-8 C, distributed uniformly though its volume.

Sketch, for your own benefit, the graph of the potential for all values of r (the radial distance from the center of the shell).

*what would the graph look like? i think it has positive asymptotes at r = +/- 15.2cm (assuming r = 0 is at the origin) but im not whether it crosses the axis on the interval [-14.6, 14.6] or whether it comes to a minimum*

What is the potential at the center of the shell (r=0)?

*im not sure how to approach this problem...*

-thanks

-thanks