$[0/16$ Points$]$

SERPSE$1022\mathrm{.}4.$OP$\mathrm{.}016.$

Three charged particles are at the corners of an equilateral triangle as shown in the figure below. $($Let $q=4\mathrm{.}00C,$ and $L=0\mathrm{.}450m.)$

$($a$)$ Calculate the electric field at the position of charge $q$ due to the $7\mathrm{.}00-C$ and $-4\mathrm{.}00-C$ charges.

$-155$

Once you calculate the magnitude of the field contribution from each charge you need to add these as vectors. kN$/$C $+$

Think carefully about the direction of the field due to the $7\mathrm{.}00-C$ charge. $k\frac{N}{C}$hat$(j)$

$($b$)$ Use your answer to part $($a$)$ to determine the force on charge $q.$

$-620$

$x$

You appear to have correctly calculated the force using your incorrect result from part $($a$).$ mN $+$

You appear to have correctly calculated the force using your incorrect result from part $($a$).$ mNhat$(j)$

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