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sqrt(2*7.33e3/((520e-3)^2*1.6e-19))*2*1.66e-27/(2*sqrt(35*1.66e-27))
sqrt(2*7.33e3/((520e-3)^2*1.6e-19))*2*1.66e-27/(2*sqrt(35*1.66e-27))
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