The drawing shows three point charges fixed in place. The charge at the coordinate origin has a value of $q_1=+8\mathrm{.}08C$; the other two have identical magnitudes, but opposite signs: $q_2=-6\mathrm{.}89C$ and $a_3=+6\mathrm{.}89C.($a$)$ Determine the net force exerted on $q_1$ by the other two charges. $($b$)$ If $q_1$ had a mass of $1\mathrm{.}50g$ and it were free to move, what would be its acceleration?

$($a$)$ Number Units

$($b$)$ Number

Units