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Physics
Physics
Problem
Three point charges
+
q
+q
+
q
,
+
q
+q
+
q
, and
−
2
q
-2q
−
2
q
are placed at the vertices of an equilateral
△
o
f
\triangle of
△
o
f
side length
L
L
L
. Calculate the magnitude of the net electric field at the centroid of the triangle.
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