q=3.2*10^-10 Кл e=1.6*10^-19 Кл (заряд электрона) n=?
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n=q/e=3.2*10^-10/(1.6*10^-19)=2*10^9 штук
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q=3.2*10^-10 Кл e=1.6*10^-19 Кл (заряд электрона) n=?
===
n=q/e=3.2*10^-10/(1.6*10^-19)=2*10^9 штук
===================================