Three point charges lie along the x$-$axis in the x y coordinate plane.

A charge of $?4\mathrm{.}00$ ?nC is $0\mathrm{.}500$ ?m to the left of the origin.

A charge of $5\mathrm{.}00$ ?nC is at the origin.

A charge of $3\mathrm{.}00$ ?nC is $0\mathrm{.}800$ ?m to the right of the origin.

Find the electric field at the following positions.

$($a$)(4\mathrm{.}90,0)$

vector E $=$ ? N$/$C

$($b$)(0,4\mathrm{.}90)$

vector E $=$ ? N$/$C

-0.500 m- -4.00 nC y 0.800 m- 5.00 nC + 3.00 nC x