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Lizwi

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About Lizwi

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    Meson

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  1. Lizwi

    Spin

    I am failing to understand spin. I believe any object when rotated 360 degrees will return it faces to their original position. What does spin 1/2 and spin 3/2 mean?
  2. Why is NO3 called spectator ion because it can react with water to form HNO3 and turn water in OH- so the solution is neutral Thanks
  3. 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?
  4. I am looking for good statistical physics and classical mechanics notes ,graduate level for self study.
  5. 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.
  6. Thanks I will have a look on it, I am going through Griffiths QM textbook. I am at the beginning of it.
  7. Okay thanks a lot
  8. 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?
  9. Mmmh okay. I see. Now for all computations in QM, shall I assume this?
  10. Ohhhhh! I can see 2 is cancelled as coefficient of m You equated the first integral to its complex conjugate??
  11. Please show me how to move from equation 1.30 to 1.31 I tried using integration by parts
  12. Lizwi

    Momentun

    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
  13. Let’s say, the online university is overseas, is mailing still possible?
  14. 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
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