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i know that the energy of a conducting charged sphere is E=Q²/(8epsilon_0*pi*r) and i know how to calculate this.

now i found that a homogenously charged sphere has E=3/5*Q^2/(epsilon_0*pi*r).

does anybody have an idea how to calculate this? i don't know where this 3/5 come from?

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# Energy of homogenously charged sphere

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