The force between two charged particles is an electrostatic force. The intensity of this force is given by the following formula:
[tex]F_c=k_c\frac{q_1q_2}{r^2}[/tex]
Where q1 and q2 are charges r is the distance, and k_c is Coulomb's constant.
Coulomb's constant has the value of:
[tex]k_c=8.9875\cdot 10^9\frac{Nm^2}{C^2}[/tex]
When we plug all the given values into the formula we get:
[tex]F_c=8.9875\cdot 10^9\cdot\frac{-2\cdot3}{80^2}=-8425781 $N[/tex]
Negative sign means that force is attractive.
