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Two identical conducting spheres, fixed ...

Two identical conducting spheres, fixed in space, attract each other with an electrostatic force of `0.108 N` when separated by `50.0 cm`, centre-to-centre. A thin conducting wire then connects the spheres. When the wire is removed, the spheres repel each other with an electrostatic force of `0.0360 N`. What were the initial charges on the spheres?

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The correct Answer is:
`pm 1.0xx10^(-6) C, pm 3xx10^(-6) C`
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