hmparticle9's latest activity
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Hhmparticle9 posted the thread Spherical conducting shell enclosing a non-conducting core in Introductory Physics Homework Help.The case I am interested in is ##r \in [b,c]##. Because the outer shell is conducting and the outer shell encloses a charge ##-Q## would...
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Hhmparticle9 reacted to vela's post in the thread Understanding how to "tack on" the time wiggle factor with
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What is the Hamiltonian of the system? The Hamiltonian determines how a state evolves in time. I don’t think ##\hat A## is the same as... -
Hhmparticle9 replied to the thread Understanding how to "tack on" the time wiggle factor.Okay I have made a major error here. I was treating the matrices as separate problems. There are three matrices ##H, A## and ##B##. How...
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Hhmparticle9 replied to the thread Understanding how to "tack on" the time wiggle factor.From this expression $$| S(t) \rangle = c_3 \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} e^{-2i\lambda t / h} + \frac{c_1 + c_2}{\sqrt{2}}...
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Hhmparticle9 posted the thread Understanding how to "tack on" the time wiggle factor in Advanced Physics Homework Help.The last problem I posted on QM made it into advanced homework help, that is why I am putting it here. I am sorry for any hassle imposed...
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Hhmparticle9 replied to the thread Concentric conducting cylinders.Now for part (iii). In that case we have a massive "ring". If we are local to the space between the two conductors then it looks to us...
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Hhmparticle9 replied to the thread Concentric conducting cylinders.I am not sure. We know that the inner cylinder has charge ##\lambda## per unit length. $$\lambda h = \sigma 2\pi a h \implies \sigma =...
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Hhmparticle9 replied to the thread Concentric conducting cylinders.I have solved part (i). $$\int_S E(r)\mathbf{e}_r \cdot \mathbf{e}_r dS = E(r) \int_S dS = E(r) 2 \pi r h = \lambda...
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Hhmparticle9 replied to the thread Concentric conducting cylinders.Aside from what I have said above I can't find anything to help me in my lecture notes. Here is where I am getting my knowledge from...
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Hhmparticle9 posted the thread Concentric conducting cylinders in Introductory Physics Homework Help.To make a start. In part (i) we can use Gauss's law to show that inside the smaller cylinder and outside the larger cylinder the field...
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Hhmparticle9 replied to the thread The flux through a cylinder from a charge at the origin.From looking at a diagram, the only component we need to worry about is the component of the flux in the ##z##-direction. The other...
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Hhmparticle9 replied to the thread The flux through a cylinder from a charge at the origin.So the area of the dome is ##2 \pi \sqrt{2} (\sqrt{2} - 1)##, we can divide this by the total area of the sphere and we obtain...
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Hhmparticle9 reacted to vela's post in the thread The flux through a cylinder from a charge at the origin with Like.
##d\mathbf{S}## is a vector quantity, so you need to include unit vectors to indicate the directions. Gauss's law applies only to the...
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Hhmparticle9 replied to the thread The flux through a cylinder from a charge at the origin.Okay. I have figured out that we need a sphere with radius ##\sqrt{2}## for us to fit my cylinder snug. Gauss's law says that the flux...
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Hhmparticle9 posted the thread The flux through a cylinder from a charge at the origin in Introductory Physics Homework Help.First the things I can figure out. For the top face: $$\text{d}\mathbf{S} = r \text{d} \theta \text{d} r \mathbf{e}_z$$ For the curved...
