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Consider the following volume, surface, and line charge distributions. Find the total charge in each case:...

Consider the following volume, surface, and line charge distributions. Find the total charge in each case:
(a) A spherical shell:
ρv = ρvo (a < r < b)
(b) A charged disk:
ρs = ρso (0 < ρ < a, z = 0)
(c) A charged loop at the equator:
ρℓ = ρℓo cos2f (ρ = a, z = 0)

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