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Find the separation between two electron...

Find the separation between two electron (in`Å`) in vacuum, if electrostatic potential energy between these electrons in `7.67xx10^(-19))J`.
[Given: e= `1.6xx10^(-19)`C, in `ε_(o)`=`8.85xx10^(-12)` `J^-1` `C^(2)``m^(-1)` pi=3.14]

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