Recent content by Kirjava

  1. K

    Advanced Mathematics @ USYD

    Band 6 for physics. What a relief! I just wasn't quite sure. I suppose had better look up the science transition workshop-- enrolment is tommorow. Thanks for the replies :).
  2. K

    Advanced Mathematics @ USYD

    Was 99.10 this year, a typical rise over last year's 98.85 or something.
  3. K

    Advanced Mathematics @ USYD

    Sounds great. Is entrance really all that selective though? I'll be accepting my offer for a place in the Bachelor of Science (advanced mathematics) program tomorrow, and have received indication that I'm likely to be accepted into the faculty of science's TSP. Although the School of Mathematics...
  4. K

    Advanced Mathematics @ USYD

    What was your experience of the SSP in maths by the way?
  5. K

    Determing ing gravity by a pendulum

    I read some time ago that it's because T = 2pi(l/g)^1/2 is only an approximate solution to the differential equations governing a pendulum's motion (it only gives good results for small angles).
  6. K

    BCS theory

    Although we haven’t covered this yet in class in detail, my current understanding is that superconductivity arises from the "binding energy" inherent in each Cooper pair. Since the pairs possess a minimum threshold energy to be disturbed or separated, the thermal "knocks" from the lattice around...
  7. K

    estimate my uai

    i just got my half-yrly report , i got maths extension 1 1/17(ranking) ban6 maths extension 2 1/10 ban6 esl 2/17 ban 4 physics 5/10 ban4 chinese background speaker 2/14 ban5 our school is about ranking 100 so what i could get in hsc?
  8. K

    4U Revising Game

    Aha, my mistake. The diagram I drew was rather misleading. Perhaps this is the more general result -- put forward with due tentativeness after the last mistake (i'd scan it up if i could). angle MPN = 360 - (90 + 90 +2tan-1(b/a)) let tan-1(b/a) = @ = 180 - 2@ Area = 1/2absin(c) =...
  9. K

    4U Revising Game

    Has there been a post for part iii yet? Might've missed it. Anyway, Area of triangle PMN = 1/2*PN*PM = a^2b^2/2(b^2 + a^2)... Perhaps that was just trivial enough to go without saying, heh :confused:. Praise be to whoever's idea this thread was by the way.
  10. K

    wavelength = h/mv

    Although I'm no expert on this by any means, I should think that an object's wavelength would be effected by relative velocity in the same way as momentum, kinetic energy and the all the rest would. Of course, if the object was travelling at significant fractions of c one would have to apply the...
  11. K

    Gravitional force of attraction & field- what's the difference?

    Well, it applies to attractions between any object and the earth -- the mass need not be near the surface. Love nitpicking. (Referring to GM/r^2, of course F=mg has the value 'g' determined for the radius of the earth) <- Edit The formula GM/r^2 refers to the gravitational field (a vector...
  12. K

    Brian Greene's "Elegant Universe"

    In all fairness, I have seen the full series more than once, and enjoyed it very much each time- but no matter how many times I propose to watch it over and over I don't think I could come any closer to being able to say whether or not the entirety of string theory is "right" or not. Perhaps any...
  13. K

    Weightlessness

    EDIT: Subscripts were not working, changed algebraic symbols. Ok, I had a little play with this. This was the result: m = mass of the earth o = mass of the object a = acceleration towards the earth v = velocity of the object (perpendicular to a) G = gravitational constant r =...
  14. K

    Australian Science Olympiads

    Re: Science Olympiads I recently enrolled for the physics NQE. I don't expect much to come of it, but if nothing else it should certainly help out for HSC physics. I think if anyone can do reasonably well (40% or thereabouts, possibly less) they should be pretty set for HSC science. It also...
  15. K

    Anti-matter and Dark Matter

    Thought I might've come off as a bit bitter. I was just surprised that people didn't notice that the style of writing in that post was considerably different from what kurt had exhibited elsewhere (or in the least suspiciously advanced), and that they went from there straight into calling him...
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