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advphys
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Homework Statement
∫∫∫∇.Fdv over x2+y2+z2≤25
F= (x2+y2+z2)(xi+yj+zk)
Homework Equations
∫∫∫∇.Fdv = ∫∫ F.n dσ
n=∇g/|∇g|
The Attempt at a Solution
g(x,y,z)=x2+y2+z2-25
taking the surface integral and replacing all
(x2+y2+z2) with 25
i got
125 * ∫∫ dσ = 12500π
But the answer key says it is 100π
I think i am making a mistake with numbers but, i couldn't find what is wrong.
Thanks