Answer
$W=3.47 \times 10^{-26} \mathrm{~J} .$
Work Step by Step
The work done is
$
\begin{aligned}
W & =\Delta U=\Delta \backslash-\vec{p} \cdot \vec{E} \mid=\left\lfloor\vec{p}_i-\vec{p}_f \mid \cdot \vec{E}\right. \\
& =[3.00 \hat{\mathrm{i}}+4.00 \hat{\mathrm{j}}]-[-4.00 \hat{\mathrm{i}}+3.00 \hat{\mathrm{j}}]\left[1.24 \times 10^{-30} \mathrm{C} \cdot \mathrm{m} h \cdot \cdot b_{4000 \mathrm{~N} / \mathrm{C} C \hat{\mathrm{i}}}\right. \\
& =3.47 \times 10^{-26} \mathrm{~J} .
\end{aligned}
$
