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10. N Three charged spheres are at rest in a plane as shown in
Figure P23.70. Spheres A andB are fixed, but sphere C is
attached to the ceiling by a lightweight thread. The tension in
the string is 0.240 N. Spheres A and B have charges ga = 28.0 nC
and qs =-28.0 nC. What charge is carried by sphere C?
%3D
30°i
0.460 m
C
0.230 m
A !
FIGURE P23.70

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