Respostas

2014-03-05T17:10:22-03:00
Massa do próton : 1,7.10^{-27}kg
Massa do elétron : \frac{1,7.10^{-27}}{1800} kg
Resolvendo ...
\frac{1,7.10^{-27}}{1800}  =  \frac{17.10^{-28}}{18.10^{2}}  = \boxed{0,9.10^{-30}kg}
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