[tex]Se da: \\
q ^{-}=-1.6*10^{-8}C \\
m_{e}= 9.11*10^{-31}kg \\
e=1.6*10 ^{-19}C \\
Rezolvare: \\
N= \frac{q}{e} = \frac{-1.6*10^{-8}C }{1.6*10^{-19} C} = \frac{-1}{10^{10} } \\
delta (m)=N*m _{e} = \frac{-1}{10^{10} }*9.11*10 ^{-31} kg=-9.11*10^{-41}kg \\
R/S: masa corpului a crescut cu delta (m)=-9.11*10^{-41}kg
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