2) - CALC A semicircle of radius a is in the first and Figure P21.86 +2 second quadrants, with the cen- ter of curvature at the origin. Positive charge +Q is distrib- uted uniformly around the left half of the semicircle, and nega- tive charge - is distributed uniformly around the right half of the semicircle (Fig. P21.86). What are the magnitude and direction of the net electric field at the origin produced by this distribution of charge? 1/2 CE y dé = -Q X -T/2 TY2 Sedi -π/2 EdA. Cose TT/2 St E). SHE E -TT/2 12 TT

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CALC A semicircle
of radius a is in the first and
second quadrants, with the cen-
ter of curvature at the origin.
Positive charge +Q is distrib-
uted uniformly around the left
half of the semicircle, and nega-
tive charge - is distributed
uniformly around the right half
of the semicircle (Fig. P21.86).
What are the magnitude and direction of the net electric field at
the origin produced by this distribution of charge?
T/2
Figure P21.86
+Q
y
TY2
SE
de = f
-π/2
_T//2
SHOW ALL
E S-112
EdA. Cose
EQUATIONS
AND A CLEAN
LABELED
DIAGRAM
-12
dr=
*dA = πr dr
TT/2 wrong
Tr?. cose de
huntes
coso do
Transcribed Image Text:CALC A semicircle of radius a is in the first and second quadrants, with the cen- ter of curvature at the origin. Positive charge +Q is distrib- uted uniformly around the left half of the semicircle, and nega- tive charge - is distributed uniformly around the right half of the semicircle (Fig. P21.86). What are the magnitude and direction of the net electric field at the origin produced by this distribution of charge? T/2 Figure P21.86 +Q y TY2 SE de = f -π/2 _T//2 SHOW ALL E S-112 EdA. Cose EQUATIONS AND A CLEAN LABELED DIAGRAM -12 dr= *dA = πr dr TT/2 wrong Tr?. cose de huntes coso do
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