Question: (a) Find E(r) if (x, y, z) = 0 (x) + 0(x) 0(x b). (b) Show by explicit calculation that (x, y,

(a) Find E(r) if ρ(x, y, z) = σ0δ(x) + ρ0θ(x) − ρ0θ(x − b).

(b) Show by explicit calculation that ρ(x, y, z) does not exert a net force on itself.

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