Homework: Use the script you wrote for the previous to solve the following problem.

What are the $($a$)$ magnitude and $($b$)$ direction of the net electrostatic force on particle $4$ due to the other three particles? All four particles are fixed in the $xy$ plane, and $q_1=-3\mathrm{.}20{10}^{-19}$ C$,q_2=+3\mathrm{.}20{10}^{-19}C,q_3=+6\mathrm{.}40{10}^{-19}C,q4=+3\mathrm{.}20{10}^{-19}C,{}_1=35\mathrm{.}0,d_1=3\mathrm{.}00cm,$ and $d_2=d_3=2\mathrm{.}00cm.$

Answer:

$($:$=ta{n}^{-1}(\frac{2}{k})-=ta{n}^{-1}(\frac{-2\mathrm{.}8931{10}^{-24}}{-5\mathrm{.}452{10}^{-24}})=28\mathrm{.}0\}$

$=208$