iii) Confirm your total flux calculation by computing the surface integral 2 > - #f. x-nds - Σ //₂² You should compute both surface integrals in spherical coordinates. 2 -2 • în ds. Figure 7: The solid hemisphere (z ≥ 0) of radius 2 with a sample of unit normal vectors on the two surfaces S₁ and S₂.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Q7 last part Needed in 30 minutes and get the thumbs up please show neat and clean work
Question 7
A spherical vector field is given by
F(r, 0, 0) 2r cos(0) ê, + 3r sin(0) eo + 0(T0) êø.
=
i) Compute the divergence of F using the spherical definition. That is, for a gen-
eral spherical vector field F = F₁ êr + F₂ eo + F3 ê
1 ə
r² Ər
V.F= (r²F₁) +
$=
ii) Compute the total flux through the solid hemisphere (z ≥ 0) of radius 2 (Figure
7) using
2
1 Ә
r sin(0) 20
$=
-2
(sin(0) F2) +
•///.V.F
iii) Confirm your total flux calculation by computing the surface integral
2
· Elle
Σ
i=1
#fr. ñ ds
-2
V.FdV.
1 OF3
r sin(0) do
You should compute both surface integrals in spherical coordinates.
F. ds.
0
Figure 7: The solid hemisphere (z ≥ 0) of radius 2 with a sample of unit normal vectors
on the two surfaces S₁ and S₂.
Transcribed Image Text:Question 7 A spherical vector field is given by F(r, 0, 0) 2r cos(0) ê, + 3r sin(0) eo + 0(T0) êø. = i) Compute the divergence of F using the spherical definition. That is, for a gen- eral spherical vector field F = F₁ êr + F₂ eo + F3 ê 1 ə r² Ər V.F= (r²F₁) + $= ii) Compute the total flux through the solid hemisphere (z ≥ 0) of radius 2 (Figure 7) using 2 1 Ә r sin(0) 20 $= -2 (sin(0) F2) + •///.V.F iii) Confirm your total flux calculation by computing the surface integral 2 · Elle Σ i=1 #fr. ñ ds -2 V.FdV. 1 OF3 r sin(0) do You should compute both surface integrals in spherical coordinates. F. ds. 0 Figure 7: The solid hemisphere (z ≥ 0) of radius 2 with a sample of unit normal vectors on the two surfaces S₁ and S₂.
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