Question

calcule f=(q1q2) p q1=-5,5uc q2=-8,7uc d=5,6em

Answer 1

$Fel = Ko . \frac{|q1.q2|}{ d^{2} }$
$Fel = 9.10^{9} . \frac{|-5,5.10^{-6}.-8,7.10^{-6}| }{(5,6 .10^{-2})^{2} }$
$Fel = 9.10^{9} . \frac{ |47,85.10^{-12}|}{31,36.10^{-4} }$
$Fel = 9.10^{9} . 1,525. 10^{-8}$
$Fel = 13,725. 10^{1}$
$Fel = 137,25 N$

Creio que esteja pedindo isso no enunciado.