(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find Enet (magnitude and direction) at point A and include a vector diagram.

q1 = 2.0x10^-6 C

q2 = 6.0x10^-6 C

r1 = 2.5x10^-3 m

r2 = 1.7x10^-3 m

2. Relevant equations

E = Klql/r^2 or E = Kq/r^2 (the first equation just has absolute values around the q for reminder but they both are the same thing)

3. The attempt at a solution

First I looked at the diagram and I know that the electric field created by a charge will always put away from a positive charge and towards a negative so I drew a vector diagram for that at point "A" using tip to tail method, then I joined E1(electric field created by q1) and E2(electric field created by q2) to have a resultant of E.

I then used the equation E = kq/r^2 to find out what E1 and E2 are and I found out that they equal 2.8x10^9 and 1.9x10^10 respectively. My question, now I have to use the component method of vector addition to find out what E is but I need an angle to do that. Is the angle in this case 90 degrees?

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# Homework Help: Electric Field Intensity

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