Part $($a$)$ of the figure shows two charged particles fixed in place on an $x$ axis with separation $L.$ The ratio $\frac{q_1}{q_2}$ of their charge

magnitudes is $4\mathrm{.}00.$ Part $($b$)$ of the figure shows the $x$ component $E_{\text{n}\text{e}\text{t}\text{,}x}$ of their net electric field along the $x$ axis just to the right of

particle $2.$ The $x$ axis scale is set by $x_s=30\mathrm{.}3cm.($a$)$ At what value of $x>0$ is $E_{\text{n}\text{e}\text{t}\text{,}x}$ maximum? $($b$)$ If particle $2$ has charge $-3e,$ what is the

value of that maximum? Assume $e=1\mathrm{.}602{10}^{-19}C.$

$($a$)$ Number

Unit

$($b$)$ Number

Unit