Recent content by jweygna1

  1. J

    Schools Grad School in Europe: Find Financial Aid & Research Opportunities

    I'm an undergrad at an Ivy League school with very good grades and a lot of research experience. I want to go to grad school in Europe: England (Oxford, Cambridge obviously), Italy(I speak Italian), or Scandinavia (or anywhere where english is spoken in the physics world). I know in the US...
  2. J

    Schools Question about getting into physics grad school

    I am a physics major just finishing a two year associate's degree. I have a 4.0 GPA and am transfering to an undergrad program in the fall, but not sure which one. I ultimately want to receive a PhD in physics and work in research. My question is this: Right now I have my choice of...
  3. J

    Partial Fraction Decomposition

    you have A/s+(Bs+C)/(s^2+4). Multiplying each numerator by the other's denominator gives: 1=A(s^2+4)+(Bs+C)s=(A+B)s^2+Cs+4A so now what are your equations for the coefficients?
  4. J

    Laplace Transform with IVP and completing the square

    Right after you completed the square in the denominator, I would have split it up there to: Y(s)=1/(s^2(s^2+2s+2)) + (s+3)/(s^2+2s+2) = u+v There we can see that v=(s+1)/(s^2+2s+2) +2/(s^2+2s+2) so L-1{v}=e^(-t)(cos(t)+2sin(t)) Now partial fractions with just u= 1/(s^2(s^2+2s+2)) is easier...
  5. J

    Laplace Transform with IVP and completing the square

    Right after you completed the square in the denominator, I would have split it up there to: Y(s)=1/(s^2(s^2+2s+2)) + (s+3)/(s^2+2s+2) = u+v There we can see that v=(s+1)/(s^2+2s+2) +2/(s^2+2s+2) so L-1{v}=e^(-t)(cos(t)+2sin(t)) Now partial fractions with just u= 1/(s^2(s^2+2s+2)) is easier...
  6. J

    QM to QED: How Far Should I Self Study?

    Get the book : QED-The Strange Theory of Light and Matter by Feynman. It is very to understand but very concise.
  7. J

    Antimatter interact with massive matter through gravity.

    How does antimatter interact with massive matter through gravity. Does it still attract? I know most antiparticles are stored using electromagnetic fields so we wouldn't see the effect of gravity, but have we ever just let one loose and seen if it falls to the earth?
  8. J

    Superpartners and the Search for New Physics at the LHC

    Thank you. The book I read was by Gordon Kane of Ann Arbor and he made it seem like the detection of 'sparticles' was in the recent future.
  9. J

    Superpartners and the Search for New Physics at the LHC

    I have just finished reading a book on supersymmetry that was written in 1999. It explained extensively about the existence of superpartners. As of 199, though, none had been observed. My question is have any been observed in the last ten years? Also has the Higgs Boson been observed in that...
  10. J

    Amazing 16-Year-Old Finds Bernoulli Numbers Relationship

    What do expect? Journalists aren't required to take anything past remedial maths.
  11. J

    Is Completing the Square Necessary If I Know the Quadratic Formula?

    Inverse Laplace transforms come to mind/
  12. J

    What is the most difficult mathematics?

    Like a lot of others said, it all depends on your personality. I struggled with abstract algebra and discrete a bit as an undergrad, but after a few weeks i got used to it. For me anything to do with calculus is very easy (ODE, PDE included), but it all depends on how your mind works.
  13. J

    Can you learn to be good at math or are you just born with it ?

    There is a level of mathematical talent one is born with, but certainly don't change your area of interest because of it. Like the many posters have said, some might pick it up faster than others, but anyone can learn math.
  14. J

    Help with Inverse Laplace Transform

    I forgot the t in the sine function and it wouldn't let me edit my post: h(t)=e^(-10t)*sin(sqrt(5k-100)t)
  15. J

    Help with Inverse Laplace Transform

    h(t)=e^(-10t)*sin(sqrt(5k-100))
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