Recent content by frustr8photon

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    Normalisation of a Wavefunction

    Strictly speaking, the OP asked "what makes a wavefunction NORMALIZED," not normalizable. For a wavefunction to be normalized, the integral the wavefunction from -infinity to infinity must equal 1 (as suggested in Post #4).
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    I'm a little intimidated by my professor

    if you're at a big university doing research as a sophomore, sounds like you're doing quite well for yourself! making any headway in research as an undergrad takes time. how closely do you work with the scientist guy? sounds like your work with him would actually have a greater impact on your...
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    Admissions How does one C grade affect grad admissions?

    How does one "C" grade affect grad admissions? Hello all, I got a C in a junior-level math course. Should I bother applying to my top choices of physics grad schools (MIT, Illinois)? I'm a junior, physics and math double major. Good grades (almost all A's and a couple B's) up until now...
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    Two Vectors of Equal Magnitudes

    interesting solution. note that you should guess right off the bat that it will be a small angle. if the unit vectors point in nearly the same direction, then they should subtract to something very small and add to something much bigger, e.g. the ratio A+B / A-B = 25. All you really need here...
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    Courses Which Math Courses Should I Choose for Oceanography Grad School?

    wow, you sound like a great student! probability theory is very fun in terms of pure maths, but in terms of applying it to your field you can probably pick up any counting arguments and knowledge of distributions without taking the course. except perhaps in rare cases, you do not need to...
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    Reaction at 4 Points in Rectangle with Force in x-Direction

    wow, this is incredibly awesome. if the bendy-ness were given, what kind of quantity would that come as? also, are tensors used to solve this problem?
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    Solving the Birthday Problem: Probability & Average Guesses

    So in the above post, I found that the expected number of guesses to identify one of the five birthdays was 61. Now I will find the expected number of guesses to correctly identify all five birthdays. To do this, I think we would need to determine the probability that a string (of guesses) with...
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    Solving the Birthday Problem: Probability & Average Guesses

    Okay, so basically this is a discrete, uniform distribution with 365 possible values, from which we have randomly selected five distinct data points. (It looks like you want to assume that the birthdays are definitely on five distinct days, which probably makes things easier.) Regarding your...
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    Is the Empty Set Considered an Open Set in Topology?

    The above quote nails it. I'm surprised this thread has been the subject of so much debate (not to say that the background discussion isn't very interesting): I have absolutely no idea what open and closed sets are, but from the basic structure of the definition of "open" (All objects in the...
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    How Do Speed and Direction Change for Two Colliding Pool Balls?

    Sorry--you will need to use conservation of energy, too. this plus both equations for conservations of momentum should be enough to solve the problem.
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    How Do Speed and Direction Change for Two Colliding Pool Balls?

    shouldn't their positions be the same when they collide? basically you want to split the problem up into two problems: momentum is conserved in both the x and y directions, independently. also it looks like you're assuming completely elastic collisions.
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    Medical Bath at night cause you pneumonia?

    Are you saying that bathing at night causes pneumonia, or that it treats insomnia? I don't know that either claim is completely implausible, but why it be true medically?
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