Steve4Physics's latest activity
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SA bit of polishing... girl-eigenvector to boy-eigenvector: "Of course I care. It's just that we have very different eigenvalues, and I...
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SSteve4Physics replied to the thread Bad Math Jokes.Why did the girl-eigenvector and the boy-eigenvector split up? They found that they had very different eigenvalues. And they both...
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SSteve4Physics replied to the thread Correct statement about size of wire to produce larger extension.No. The shape of a stress-strain graph doesn't depnd on the wire's diameter. So the breaking stress and strain are 'constants' for the...
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SSteve4Physics replied to the thread Correct statement about size of wire to produce larger extension.Here's one way to look at it... For a given material, there is a unique maximum value of strain, ##\epsilon_{max}##, at which fracture...
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SSteve4Physics replied to the thread Distance between a Clock's hands when the distance is increasing most rapidly.Well (from what I've read), it depends. E.g. "A bluff charge is intended to intimidate, not to attack. A bluffing bear may run...
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SSteve4Physics replied to the thread Help needed with Polarisation (Rotated Waveplates).I ___________________________ @catedral3000, it’s worth addressing some problems with your answers to part a). From the first graph it...
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SSteve4Physics replied to the thread Cone on horizontal surface.The non-slipping condition is simply required to enable the cone to rotate around the vertical axis. Friction provides the centripetal...
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SSteve4Physics replied to the thread Cone on horizontal surface.That's a pity - I thought it [my Post #10 formulation] was quite good! How could it be improved? Yes - then the solution is nearly...
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SSteve4Physics replied to the thread Cone on horizontal surface.Possibly something like this... A solid right circular cone of uniform density has mass m, height h and a base of radius r. ‘V’ is the...
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SSteve4Physics replied to the thread Curving of gravitational field lines.A line can't be perpendicular to a point. You probably meant to ask: "Aren't gravitational field lines always straight and directed...
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SSteve4Physics replied to the thread Earthed plates confusion.I'll explain! In Post #24 you wrote: I looked at the link. The first (remarkable) sentence of the abstract is this: "The foremost...
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SSteve4Physics replied to the thread Earthed plates confusion.My wording was very poor. It was not the intended meaning. (But I hope the intended meaning was clear from the latter part of the post.)...
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SSteve4Physics replied to the thread Earthed plates confusion.I may misunderstand the issue you are indigating. But to try to answer your question... Take three conducting plates (equal sizes...
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SSteve4Physics replied to the thread Earthed plates confusion.Well, I'm not sure if this answers your question but here’s a qualitative (definitely not rigorous) attempt... Thinking visually, a...
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SSteve4Physics replied to the thread Earthed plates confusion.@tellmesomething, this might resolve specific issues you raised…. ‘Ground’ and ‘infinity’ are not necessarily equivalent. I believe...








