[tex]q_1=8\times10^{-12}\ C\\ q_2=7\times10^{-16}\ C\\ d=6\times10^{-9}\ m\\ k_0\approx9\times10^9\ Nm^2C^{-2}[/tex]
[tex]\boxed{|F|=k_0\dfrac{|q_1||q_2|}{d^2}}\ \therefore[/tex]
[tex]|F|\approx9\times10^9\dfrac{|8\times10^{-12}||7\times10^{-16}|}{(9\times10^{-9})^2}\ \therefore[/tex]
[tex]|F|\approx\dfrac{504\times10^{-19}}{81\times10^{-18}}\approx\dfrac{56}{9}\times10^{-1}\ \therefore[/tex]
[tex]\boxed{|F|\approx\dfrac{28}{45}\ N\approx0.6\bar{2}\ N}[/tex]
