Recent content by anaisabel

  1. anaisabel

    Delta function to calculate density of probablity

    In when comes to length of the cocrodile, I haven't gotten that far because I can't solve the integral. I have tried to solve it, and I understand now why you have to separate in two intervals, from 0 to pi/4 and pi/4 to pi/2, because when you perform tha change of variable and change the limits...
  2. anaisabel

    Delta function to calculate density of probablity

    I have forgotten a bit of my calculus, so I know the distance is the same, but if i don't know why it would complicate?.
  3. anaisabel

    Delta function to calculate density of probablity

    Can you elaborate a bit more, i am not understanding very well.
  4. anaisabel

    Delta function to calculate density of probablity

    Sorry , my handwriting is a bit messy, but basically he integrates fron 0 to pi/4 and then from pi/4 to pi/2. The length of the crocodile isn't really relevant, i just wrote the problem for some context. What i really want to know is how to solve that integral. I know you have to change...
  5. anaisabel

    Grand partition function (Volume divided into N spaces)

    equation i need to proof. the N in here, is the avarege number of particles, N0 is the total number of particles,V is total volume, v0 I am not quite sure what it is because it isn't mentioned in the homework, but I am assuming it is the volume of which space.
  6. anaisabel

    Density of states of one three-dimensional classical harmonic oscillator

    I think my mistake is considering a range of E+ ΔE and E-ΔE, which in that case. it doesn't appear the (1/2), but if I consider the range E+ ΔE and E , then that factor (1/2) appears, so I think that's the issue.
  7. anaisabel

    Density of states of one three-dimensional classical harmonic oscillator

    the book in question is kardar particles, section 4.4, ideal gas. Kardar considers the integral the volume of hypersphere of dimension d with thickness ΔR. In that case, the general formula for N particles, is 3D, because the integral doesn't depend on the position , so your only integrating the...
  8. anaisabel

    Density of states of one three-dimensional classical harmonic oscillator

    If you look at textbooks , when writing the integral they always use the dimension that is applied to the situation. So in the case of the ideal gas is 3d and in the final formula they use 3d not 2d, I will show what I did, it is the bottom of the page. If i use 5d instead of 6d, I will not...
  9. anaisabel

    Density of states of one three-dimensional classical harmonic oscillator

    Well, I understand that but coming to that conclusion has to come from the calculations right? I know I am integrating in a 6 dimensional space, dxdydzdpxdpydpz, so when applying the formula I have to use 6d not 5d,because of the integral. But later on after thinking a bit more I realized that I...
  10. anaisabel

    Magnetic field (correction term)

    yes ρ is r, is basically the radius, it is the notation I am used from my course, but it is the same thing. So after I calculate the integral , what manipulation I need to do to come to conclusion that condition 2 in my file is valid, even when I isolate the ratio of the second derivate of...
  11. anaisabel

    Magnetic field (correction term)

    I have attached a new file with more information, I hope it clarifies your first question, I haven't study jeffimenko equations, it wasnt mentioned in much detail in my electromagnetism course.
  12. anaisabel

    Magnetic field (correction term)

    Hi, thanks for answering I have a few questions about what you said, I have attached a new file with a few additions for you see what I am doing, I can't seem to understand a few things.
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