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Let F(x,y,z)=xi+yj+zkx2+y2+z2\mathbf { F } ( x , y , z ) = \frac { x \mathbf { i } + y \mathbf { j } + z \mathbf { k } } { x ^ { 2 } + y ^ { 2 } + z ^ { 2 } }

Question 150

Multiple Choice

Let F(x,y,z) =xi+yj+zkx2+y2+z2\mathbf { F } ( x , y , z ) = \frac { x \mathbf { i } + y \mathbf { j } + z \mathbf { k } } { x ^ { 2 } + y ^ { 2 } + z ^ { 2 } } and S is the region bounded between x2+y2+z2=1x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = 1 and x2+y2+z2=4x ^ { 2 } + y ^ { 2 } + z ^ { 2 } = 4 . Using the Divergence Theorem, S\iint S FndS\mathbf { F } \cdot \mathbf { n } d S is


A) 15π15 \pi
B) 12π12 \pi
C) 10π10 \pi
D) 9π9 \pi
E) 8π8 \pi

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