I have the answer here: https://www.chegg.com/homework-help/Fundamentals-of-Phys

Question

I have the answer here: https://www.chegg.com/homework-help/Fundamentals-of-Physics-9th-edition-chapter-22-problem-9P-solution-9780470469118

However, I don't understand why Enet = 2Kq/r^2

Why wouldn't Enet = E1 + E2?

Meaning E1 = kq/r^2

Plus

E2 =kq/r^2

Please write an explanation not just rework the problem. I have the answer but it just doesn't make sense

#9 Figure 22-32 shows two charged particles on an x axis:-q = 3.20 × 10-19 C at x =-3.00 m and q= 3.20 × 10-19 C at x= +3.00 m. What are the (a) magnitude and (b) direction (relative to the positive direction of the x axis) of the net electric field produced at point P at y = 4.00 m? -9 Fig. 22-32 Problem 9.

Explanation / Answer

here both charges produce same magnitude of elctric field at point.

But we know, a negative charge produces elctric field radially inward and a positive charge produces electric field radially outward.

so, the y component of both electric fields get cancelled and x-components of electic field add up.

so, the net electric field will be towards -x axis.

we cant add the two elctrcif fields directly because they are not in the same direction.

if we want to find net electric field at the origin we can add the two elctric fields directly then we will get net electric field.

because, at origin both elctric fields points towards -x axis.

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