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nn3568
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Homework Statement
Three positive point charges are arranged in a triangular pattern in a plane, as shown below. The Coulomb constant is 8.98755 × 109 N · m2/C2.
Find the magnitude of the net electric force on the 2 nC charge. Answer in units of N.
Homework Equations
Fe = (kq1q2) / (d2)
The Attempt at a Solution
I was looking at this thread with the exact same problem and I followed the directions. However, I don't know what I am doing wrong.
https://www.physicsforums.com/showthread.php?p=1892198"
My diagram: (it's like the picture given in the thread I looked at but just with different numbers)
3nC
(+)
|
2m
||---2m---|
-------------(+) 2nC
|
2m
|
(+)
6nC
What I tried to do:
((8.9875e-9)(2e-9)(3e-9))/((sqroot(8))2) = 6.740625e-9
((8.9875e-9)(2e-9)(6e-9))/((sqroot(8))2) = 1.348125e-8
cos(45)6.740625e-9 + sin(45)6.740625e-9 = 9.53268329e-9
-cos(45)1.348125e-8 + sin(45)1.348125e-8 = 0
After that I am confused.
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