QuestionThree charges are placed at the corners of a rectangle, and observation point $P$ is located at the fourth, as shown. The rectangle, with a horizontal side length of $h=7.11 \mathrm{~cm}$ and a vertical side length of $v=3.91 \mathrm{~cm}$, is aligned with the coordinate axes. The charges at the upper-left, upper-right, and lower-left corners are $q_{\mathrm{UL}}=+4.27 \mathbf{n C}$, $q_{\mathrm{UR}}=-7.34 \mathrm{nC}$, and $q_{\mathrm{LL}}=+5.33 \mathrm{nC}$, respectively. Arrington, Parker - pjas37)epsu.edu - Part (a) $\checkmark$
The net electric field at point $P$ may be expressed in Cartesian unit-vector notation as $$\vec{E}_{\text {net }}=E_{x} \hat{i}+E_{y} \hat{j}$$
Enter the value, in newtons per coulomb, of the horizontal component of the net electric field. $$E_{x}=1.459 \times 10^{4} \mathrm{~N} / \mathrm{C}$$ $\checkmark$ Correct!
Part (b) The net electric field at point $P$ may be expressed in Cartesian unit-vector notation as $$\vec{E}_{\text {net }}=E_{x} \hat{i} \mp E_{y} \hat{j}$$
Enter the value, in newtons per coulomb, of the vertical component of the net electric field. $$E_{y}=$$ $\square$ $\mathrm{N} / \mathrm{C}$ $\square$ ( $\square$ 7 ( 7 8 9 $\square$ $$\begin{array}{|l|l|l|} \sin \theta & \cos \theta & \tan \theta \\ \hline \operatorname{cotan} \theta & a \sin \theta & a \cos \theta \\ \hline \operatorname{atan} \theta & \operatorname{acotan} \theta & \sinh \theta \\ \hline \cosh \theta & \tanh \theta & \operatorname{cotanh} \theta \\ \hline \end{array}$$ E 13 (1) 4 5 6 0 $\square$ Degrees Radians 1 $\square$ 1 2 3 $\square$ $\square$ $\square$ $\square$ END $++$ $-0$ $($. CLEAR Submit $\square$ PACKspace $\square$ $\square$ (V) Feedback: I give up! 2 Free Submission(s) Remaining Hints: $\underline{2 \%}$ deduction per hint. Hints remaining: $\underline{3}$ Feedback: $2 \%$ deduction per feedback. Part (c) What is the magnitude, in newtons per coulomb, of the net electric field at point $P$.