Recent content by jhosamelly

  1. J

    Vector coordinates and its points

    Yes. That's what I mean. Thanks for your reply. i thought I got it wrong. :)
  2. J

    Vector coordinates and its points

    Is there a way to know the points if I only have the vector coordinates and I can't use the origin as one of the points? For example, if I have vec(PQ) <-1,4,-5> . Is there a way to know the points of this vector?
  3. J

    Planning to study in the US for my PhD

    Yes! I took all those courses. Right now I'm doing my thesis. After this I want to study in US.
  4. J

    Planning to study in the US for my PhD

    I'm from the Philippines. Right now I'm taking up Master of Science in Physics . I'm currently doing my Thesis, my current GWA is 3.2. (1.0-4.0 scale) My undergrad degree is Bachelor of Secondary Education major in Physics. My GWA back then is 89. (We don't use 1.0-4.0 scale) Do you thing I...
  5. J

    Maxwell's Relations of Thermodynamic Functions

    The following are Maxwell's Relations right? \left(\frac{\partial s}{\partial v}\right)_{T} = \left(\frac{\partial p}{\partial T}\right)_{v} \left(\frac{\partial s}{\partial p}\right)_{T} = - \left(\frac{\partial v}{\partial T}\right)_{p} Are these all? And BTW, these are derived from the...
  6. J

    Comprehensive Exam for Quantum Mechanics.

    I've been reviewing for quite some time now. Don't get me wrong. Well, what I want now is to focus on some topics which most probably would be given in the exam. Thanks
  7. J

    Comprehensive Exam for Quantum Mechanics.

    Well, our test is this coming saturday. What do you think should I study for Matrix Mechanics?
  8. J

    Comprehensive Exam for Quantum Mechanics.

    So, for our comprehensive exam (MS Physics) we need to answer 4 out of 7 problems. Here are the topics. 1. Fundamental Postulates of Quantum Mechanics 2. Wave Mechanics 3. Angular Momenta 4. Matrix Mechanics 5. Harmonic Oscillator 6. Atoms 7. Approximation Methods So, where do you...
  9. J

    How would I know if my integrand is odd?

    YES! Certainly! Thanks!
  10. J

    How would I know if my integrand is odd?

    Thanks for the responses guys. I'm learning. But, let me show you the example I'm having difficulty understanding. So, in normalization. \int_{-∞}^{∞} |ψ(x)|^{2} \mathrm{d}x = 1 (I get this) Say our ψ(x) = A e^{-amx^2 / \hbar} So we have \int_{-∞}^{∞} |A e^{-amx^2 /...
  11. J

    How would I know if my integrand is odd?

    How would you take the derivative of this? \int^{∞}_{0} e ^{\frac{-2amx^2}{\hbar}} What's the trick in doing integrals having infinity as one of its limit? Or what if the limit is from ∞ to -∞?
  12. J

    How would I know if my integrand is odd?

    Why is the integral of an odd function ZERO?
  13. J

    How would I know if my integrand is odd?

    So, I'm studying normalization (Quantum Mechanics). I came across examples of integrands which they say are odd. So, they say the integral of an odd function is zero. How would I know my integrand is odd? Thanks :)
  14. J

    Integral of 5x^2 + √x - 4/x^2: Step-by-Step Solution Guide

    All you need to do now is simplify :)) \frac{5}{3}x ^{3} + \frac{2}{3} x^{\frac{3}{2}} + \frac{4}{x}
  15. J

    Integral of 5x^2 + √x - 4/x^2: Step-by-Step Solution Guide

    \int \sqrt{x} dx = \int \ {x^{\frac{1}{2}}} dx = \frac{2}{3} x^{\frac{3}{2}}
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