Question

duas cargas eletricas puntiformes estão separadas po 3cm de distancia sendo Q1= 2MC Q2=6MC calcule a intensidade da força Q1 aplica sobre Q2 considerando o sistema imperso no vacuo

Answer 1

$\mu=10^{-6}$
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$k_{vacuo}=9*10^{9}~Nm^{2}/C^{2}\\Q_{1}=2~\mu C=2*10^{-6}~C\\Q_{2}=6~\mu C=6*10^{-6}~C\\d=3~cm=(3/100)~m=3*10^{-2}~m$

$F= k*|Q_{1}|*|Q_{2}|/d^{2}\\F=9*10^{9}*2*10^{-6}*6*10^{-6}/(3*10^{-2})^{2}\\F=9*10^{-3}*12/(9*10^{-4})\\F=12*10^{-3}/10^{-4}\\F=12*10^{-3}*10^{4}\\F=12*10^{-3+4}\\F=12*10^{1}\\F=120~N$