TSny's latest activity
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TSny reacted to JimWhoKnew's post in the thread I Quantum behaviour of an electron around a positively charged sphere with
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In addition to the wise things that were already said above, the quoted claim is simply wrong. A superposition of different energy... -
I think that as a physical process, the problem is under-determined. The constancy of ##~\left|\vec{a}\right|~## constraint...
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TSny replied to the thread Motion in 2 dimensions.Very nice explanation! I think it gets to the heart of the matter. By choosing the tangential force appropriately as a function of...
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If my calculations are correct, it is possible to construct infinitely many answers to that problem (as stated). Including "never".
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Since this problem came about as an off topic, I feel uncomfortable to hijack the thread. Even more so when the OP places a picture of a...
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Involves ##\Gamma(1/4)##, right?
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TSny replied to the thread Motion in 2 dimensions.Yes, I agree. And the arc length comes out nice.
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TSny replied to the thread Electric field due to arc shaped thin rod.I don't understand why you say that "dEx is Rcosθ distance away". Both dE and dEx are associated with the same point, namely the...
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TSny replied to the thread Electric field due to arc shaped thin rod.Your answer is wrong because you can't get the x-component dEx by replacing R in the denominator of dE by Rcosθ. Note that Rcosθ < R...
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TSny replied to the thread Electric field due to arc shaped thin rod.yes
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TSny replied to the thread Electric field due to arc shaped thin rod.No. Let's forget dEx for now. Just concentrate on dE. dE is the magnitude of the electric field vector dE at the origin O produced...
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TSny replied to the thread Electric field due to arc shaped thin rod.What was your reason for writing the denominator of the integrand as ##(R\cos \theta)^2##? This is not correct. To find ##E_x## due to...
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TSny replied to the thread Electric field due to arc shaped thin rod.For the element of charge ##dQ## shown, how would you write an expression for ##dE## at the origin? How would you write the x-component...
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TSny replied to the thread Motion in 2 dimensions.The vertical side of each triangle is the y-component of the velocity, which remains constant in time. The horizontal side is the...
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Hmm yes it seems to me that as the x velocity becomes large that one must imagine this as zooming out on the diagram in such case the y...
