Recent content by ASmc2

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    Landau classical field theory question

    I assume it is as follows. He took du=dv in both frames, then said ds=1/gamma * cdt. But that still boters me.
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    Landau classical field theory question

    One page 24 of his book on classical field theory (4th edition), Landau derives the relativistic equation of motion for a uniformly accelarated particle. How does he get the differential equation that leads him to his result?
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    Solving Shankar's Exercise 5.1.9 Without 5.1.1: Expanding Psi?

    Yes, that is correct. All I am trying to do is to expand psi in terms of of the energy eigenstates. My derivation for ## \braket{E,a}{\psi}## is based on the one leading to 4.3.11a. The only initial condition is psi at t=0, which does not matter for U(t). I still cannot reconcile my result with...
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    Solving Shankar's Exercise 5.1.9 Without 5.1.1: Expanding Psi?

    See the attachment. Obviously there must be something I am missing. Thanks.
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    Solving Shankar's Exercise 5.1.9 Without 5.1.1: Expanding Psi?

    This is a question for those with Shankar in their disposal. When studying from this book, Exercise 5.1.1 puzzled me. Now, it is easy to solve the exercise from 5.1.9. However, how would we expand psi in terms of the energy eigenfunctions,* if we did not have 5.1.9*, but instead started fresh...
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    Graduate Where Do Sections 3.45 and 3.46 in Goldstein's 3rd Edition Originate?

    Yes. Thanks for the help with 3.45
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    Graduate Where Do Sections 3.45 and 3.46 in Goldstein's 3rd Edition Originate?

    OK, I get that now, thanks. I got the correct equation now. Now to get (3.46).
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    Graduate Where Do Sections 3.45 and 3.46 in Goldstein's 3rd Edition Originate?

    That u0^3 and u0 terms bother me, as you can see.
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    Graduate Where Do Sections 3.45 and 3.46 in Goldstein's 3rd Edition Originate?

    My work is attached.
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    Graduate Where Do Sections 3.45 and 3.46 in Goldstein's 3rd Edition Originate?

    I get an equation of the form x''+kx=c. where c is some constant, '' gives the second derivative with respect to theta, and x is u-u0.
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    Who is your favorite SciFi character?

    Hari Seldon. HE CAN SEE THE FUTURE USING MATH. YES, HE DOES SO THROUGH STATISTICAL ANALYSIS APPLIED TO LARGE POPULATIONS, BUT HE CAN STILL PREDICT WHAT THE GROUP WILL DO TO A SINGLE PERSON. HE IS AWESOME.
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    Graduate Where Do Sections 3.45 and 3.46 in Goldstein's 3rd Edition Originate?

    This is a question to those who have the 3rd edition at their disposal. Where do 3.45 and 3.46 come from? I understood everything he said before that...
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    Graduate Isothermal Expansion and the 2nd Law

    Thank you very much
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    Graduate Isothermal Expansion and the 2nd Law

    The book that I use (Concepts in Thermal Physics by S. and K. Blundell) states the second law in two ways. The way they state the Kelvin version is "no process is possible whose sole result is the complete conversion of heat into work." How does that fit in with the isothermal expansion of an...
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    Mass hanging from a flexible wire

    Ok! The problem was solved after my last reply. Thank you very much everyone!