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(2 * 0.15 kg * 6.67*10^-11 N⋅m^2/kg^2/(299792458 m/s)^2) / radius of electron
(2 * 0.15 kg * 6.67*10^-11 N⋅m^2/kg^2/(299792458 m/s)^2) / radius of electron
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