?For the following exercises, consider the radial fields \(\mathbf{F}=\frac{\langle x

Chapter 6, Problem 325

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For the following exercises, consider the radial fields \(\mathbf{F}=\frac{\langle x, y, z\rangle}{\left(x^{2}+y^{2}+z^{2}\right)^{\frac{p}{2}}}=\frac{\mathbf{r}}{|\mathbf{r}|^{p}}\) , where p is a real number.

Let S consist of spheres A and B centered at the origin with radii 0 < a < b. The total outward flux across S consists of the outward flux across the outer sphere B less the flux into S across inner sphere A.

                             

Show that for p = 3 the flux across S is independent of a and b.

Text Transcription:

F = langle x, y, z rangle / (x^2 + y^2 + z^2)^pi/2 = r / |r|^p

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