Question

Me ajudem nesta questao , Por Favor

Answer 1

3 cm = 0,03 m = 3*10-² m

$F = k * \frac{|q1*q2|}{d^{2}}$
$F = 9*10^9 * \frac{5*(-4)}{0,03^2}$
$F = 9*10^9 * \frac{-20}{(3*10^{-2})^2 }$
$F = 9*10^9 * \frac{-20}{9*10^{-4} }$
$F = 1*10^{13} * -20$
$F = -20 * 10^{13}$
$F = -2* 10^{14} N$