The electric field in an $xy$ plane produced by a positively charged particle is $8\mathrm{.}64(7\mathrm{.}2$hat$(i)+5\mathrm{.}5$hat$(j))\frac{N}{C}$ at the point $(3\mathrm{.}9,5\mathrm{.}5)cm$ and $124$hat$(i)$

$\frac{N}{C}$ at the point $(3\mathrm{.}9,0)cm.$ What are the $($a$)x$ and $($b$)$ y coordinates of the particle? $($c$)$ What is the charge of the particle?

$($a$)$ Number

Units

$($b$)$ Number

Units

$($c$)$ Number

Units