22.45: a) , λ 2 4 1 ,0 r E b r a πε = < < radially outward, as in 22.48 (b) . b) , , λ 2 4 10 r πε E c r = radially outward, since again the charge enclosed is the same as in part (a). c) d) The inner and outer surfaces of the outer cylinder must have the same amount
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