r 37. Singular radial field Consider the radial field (x, y, z) F (x2 + y2 + z2)1/2" a. Evaluate a surface integral to show that SsFonds = 4ta?, where S is the surface of a sphere of radius a centered at the origin. b. Note that the first partial derivatives of the components of F are undefined at the origin, so the Divergence Theorem does not apply directly. Nevertheless, the flux across the sphere as computed in part (a)...
across Let F = (x i+yj +z k'). What is the outward flux of F (x2 + y2 +22)8 a sphere of radius R> 0 centered at the origin?
10. -5 points My Notes Let F be the solid sphere osx2 +y2 + z2 s 1 of radius 1 centered on the origin and let F, be the portion of F that lies in the first octant. Assume that fx, y, z) is a continuous function that is symmetric with respect to reflections through the coordinate planes. That is: r-x, y, z) = f(x, y, z), Rx,-y, z)-/(x, y, z), f(x, y,-z) =rx, y, z). IIL If f(x, y,...
13. Let E be the region bounded by the half sphere Sı: x2 + y2 + z2 = 4 (y>0) on one side, and the XZ-plane on the other (identified as S2) a) Show how you can parameterize S, and S2 so that both surfaces are oriented outwards. Draw the tangent vectors on S. b) Let the vector field F=<-y, x, z> represent a fluid flow field through the region E. Use Stoke’s Theorem to evaluate la curl F.ds. You...
NO.25 in 16.7 and NO.12 in
16.9 please.
For the vector fied than the vecto and outgoing arrows. Her can use the formula for F to confirm t n rigtppors that the veciors that end near P, are shorter rs that start near p, İhus the net aow is outward near Pi, so div F(P) > 0 Pi is a source. Near Pa, on the other hand, the incoming arrows are longer than the e the net flow is inward,...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...