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1 vote
1 answer
253 views

set up triple integral for volume

I was working on practice problems in the textbook and got stuck on this question. Any help would be greatly appreciated. Set up two triple integrals with two different orders of integration that ...
marbeiii's user avatar
0 votes
2 answers
965 views

Gauss Law Surface Integral Problem

I have a problem such as: Find the net charge contained in a solid hemisphere $x^2 + y^2 + z^2 \le 64$, where $z \ge 0$ if the electric field is $E=[5x, 5y, 5z]$ I know from my sources that this is ...
Computer's user avatar
  • 575
0 votes
2 answers
689 views

Double Integral Application with Disks

I have to find the average value of a function $f(x, y) = x + y + x^2 + y^2$ over the disk $0 \le x^2 + y^2 \le 4$, and I am certain this is a double integral problem but I am unsure of the limits ...
Computer's user avatar
  • 575
1 vote
0 answers
58 views

Prove that if $V=\text{constant}$ then the second part in the paratheses after the integral sign is equal to $0$

$$\frac{\mathrm d}{\mathrm dt^i} \underset{\large V(t)}{\iiint} \Psi \,\mathrm dV= \underset{\large V(t)}{\iiint} \left({\frac{\partial \Psi}{\partial t}+\nabla\cdot\Psi\mathbf v_i}\right)\, \mathrm ...
Victor's user avatar
  • 8,382
0 votes
0 answers
2k views

Volume enclosed by two spheres (triple integral, cylindrical coordinates)

The question: Find the volume of the solid enclosed by the sphere $x^2 + y^2 + z^2 - 6z = 0$ , and the hemisphere $x^2 + y^2 + z^2 = 49 , z ≥ 0$ I set up the triple integral $\int_0^{2\pi}\...
user2847441's user avatar