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A total charge of 20.0 nC is distributed uniformly through an insulating sphere with a radius...

A total charge of 20.0 nC is distributed uniformly through an insulating sphere with a radius of 6.00 cm. The total electric flux (in N m2/C) through a concentric sphere with a radius of 3.00 cm is:

K = 9 x 10+9 N.m2.C-2 , ε0 = 8.85 x 10-12 C2.N-1.m-2

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