Recent content by KingBigness

  1. K

    Piezoelectric Effect: Length Contraction & Dipole Moment

    From what I understand the Piezoelectric effect occurs when there is a change in dipole moment. If a crystal was to be accelerated along the x direction then the crystal will undergo a length contraction. My question is, would this not cause a change in dipole moment from an outside observer and...
  2. K

    2D Density of States Energy Independent

    It's known that the Density of States in 2D is given by, g_2(E)dE = \frac{a^2m}{\pi\hbar^2}dE The density of states in 1D and 3D are as follows, g_1(E)dE = \left(\frac{a}{\pi}\sqrt{\frac{2m}{\hbar^2}}\right)\frac{1}{\sqrt{E}}dE g_3(E)dE =...
  3. K

    Which is the Best Computational Physics Book Based on C Programming?

    Can anyone recommend a good book on computational physics. I have a good understanding of C and would like the book to be based around C. Thanks =D
  4. K

    Speed of Gravity: Is the Sun 8 Minutes Behind?

    I understand that Newton thought that the effect of gravity was instantaneous, however Einstein believed it to 'travel' at the speed of light. I also read that in 2002 scientists concluded that gravity traveled at 1.06 times that of the speed of light but with an error of plus or minus 0.21...
  5. K

    Electrons - Relativistic velocity addition

    How did you go with the rest of the assignment =P
  6. K

    Approximation for Unknown Variable

    The equation was written by a computer scientist and it producing a real world value is beside the point. The way I wrote my program to solve for theta was start with the lower limit of theta, trial it and see how much it deviated from d and if this deviation was more than 0.0001 then...
  7. K

    Approximation for Unknown Variable

    Assumed you meant my code. http://pastebin.com/X0Ni4ebz
  8. K

    Approximation for Unknown Variable

    Inputted by the user. I forgot to to say that theta will lie in the range arctan(\frac{v^{2}}{g*d})\le \theta \le 90 degrees
  9. K

    Approximation for Unknown Variable

    Homework Statement Firstly sorry if this is in the wrong place. I have never submitted a question on this forum about a comp sci question. I got an assignment that asked me to solve for a variable using Bisection of successive approximations. This however is not why I am here as I know you...
  10. K

    Unlocking Quantum Numbers for Lithium Atom

    Homework Statement Lithium has an atomic number Z = 3. Two of its electrons have the quantum numbers {n, L, m{l}, m{s}} = {1,0,0,+1/2} and {1,0,0,-1/2}. Write down the corresponding set of quantum numbers for the third electron in the lowest energy state of the Li atom. Briefly explain the...
  11. K

    Is it valid to split the derivative in deriving the equation for e_s(T)?

    Sorry I wasn't very clear. I have seen it before and done it countless times I just always have a memory of a teacher saying don't tell a pure mathematician about it.
  12. K

    Is it valid to split the derivative in deriving the equation for e_s(T)?

    How accepted is it? I am doing a double degree in pure mathematics and physics. If I was to do this in my pure maths classes would I be stoned?
  13. K

    Is it valid to split the derivative in deriving the equation for e_s(T)?

    Homework Statement From \frac{de_{s}}{dT} = \frac{L_{v}e_{s}}{R_{v}T^{2}} derive e_{s}(T) = 6.11 e^{\frac{L}{RV}(\frac{1}{T}-\frac{1}{273})} Homework Equations The Attempt at a Solution The way my lecturer derived it was he 'split' the derivative and took them to their respective sides...
  14. K

    A ball is thrown into the air + missing class

    Think the posts above me explain it well enough. All I can add is it is not m/s/s...this would mean ms/s = m. Acceleration is m/s^2
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