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Their are a total of 3 infinitely thin concentric shells. The innermost shell has a radius of R. Another of the shells has a radius of 2R. The third shell has a radius of 3R. The charge for each shell is +2Q.
Draw a graph of E vs r (where E is on the y axis).
Given that E is in units of (kxQ/(a^2)), on the graph make sure to show the values of E(3R), E(2R), and E(R).
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