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About Lizwi

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  1. It seems like in University Physics textbook by Young and Freedman, the SE differential equation is not solved, The solution is only predicted and tested. Is it not possible to solve it?
  2. I am looking for good statistical physics and classical mechanics notes ,graduate level for self study.
  3. I was computing an expectation value of kinetic energy. Here the kinetic energy is the square of momentum divided by 2m. But when I square expectation value of momentum, the textbook return Psi unsquared Please see attachment.
  4. Thanks I will have a look on it, I am going through Griffiths QM textbook. I am at the beginning of it.
  5. Okay thanks a lot
  6. Thanks for your time now lastly, can you show me a small example where you shift the derivative from one factor to another changing the sign? or it’s just as in your first post?
  7. Mmmh okay. I see. Now for all computations in QM, shall I assume this?
  8. Ohhhhh! I can see 2 is cancelled as coefficient of m You equated the first integral to its complex conjugate??
  9. Please show me how to move from equation 1.30 to 1.31 I tried using integration by parts
  10. Lizwi


    How was the equation highlighted in the attachment below simplified. I get the other term but another highlighted term went to zero, how? The hand writing is where I tried using integration by parts. A’ = ih/2m
  11. Let’s say, the online university is overseas, is mailing still possible?
  12. Hi. I am a South African staying in South Africa, I can see that in order to study I science online, only overseas universities are available for online Msc (master of science) degree. my question is “ when I enroll, how do I get the Degree certificate. Thanks
  13. Can anyone hep me understand this solution I have attached both question and solution I can see the application of Fourier's law to the right hand side of the solution, but why is right hand side multiplied by area?, also to the left, what has happened to Ko. Thanks
  14. Hi, can anyone help me, I need a soft copy for Cosmology by Jayant Narlikar 2nd or third edition Thanks
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