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  1. Petyo

    Acer Fu*k off Release the stressed UMAT Results

    I saw this on the acer website
  2. Petyo

    Can anyone give me a model answer for this question???

    The question is: Analyse the significance of the hydrogen spectrum in the development of Bohr's model of the atom.( 5 Marks)
  3. Petyo

    Trial HSC results?

    they were easy indeed, except for English :D:D. I think I came 2nd in the year for that mark. T"T Btw I'm only hoping. :D:D
  4. Petyo

    Trial HSC results?

    Mx1 94% Mx2 99% Chem 90% Physics 89% English 72 % I'm aiming for a 90 ATAR :D:D:D. My school is one of those top schools... from the bottom though.
  5. Petyo

    Finding the greatest coefficient...

    the result is said to be -11 547 360 but the question itself does not specify "magnitude" so I'm just kind of confused @@-
  6. Petyo

    Finding the greatest coefficient...

    hm here is the question: (2x^2 - (3/x) )^11
  7. Petyo

    Finding the greatest coefficient...

    hey if you're asked to find the greatest coefficient in some binomial expansion and the result turns out to be negative, what would you do?
  8. Petyo

    Creative Writing - Belonging

    what about agreeing to try to smoke in the toilet with the other girls then getting caught?
  9. Petyo

    Australian Maths Competition

    Re: Australian Mathematics Competition Did anyone figure out how to solve the last question??
  10. Petyo

    Australian Maths Competition

    Re: Australian Mathematics Competition yea that's what I did. I got 578 for that one @@
  11. Petyo

    UMAT tomorrow!

    why does my session start at 1:30pm?
  12. Petyo

    What does Act II in Educating Rita have to do with "Into the world"?

    Act II sees Rita becoming an "educated" woman and achieving what she has set out to achieve: she now understands literary criticism, is able to write essays that rank her equivalent to the "proper students" and talk confidently with people from the high-class society. etc I've read some notes on...
  13. Petyo

    "Confirmation of de Broglie's matter waves"

    Wow Thank you so much, it's the best explanation I've ever seen!
  14. Petyo

    "Confirmation of de Broglie's matter waves"

    It's said that the experiment of Davisson and Germer in which electrons are accelerated and fired at the surface of a nickel crystal demonstrates a wave property of the electrons. However, I can't really see how the scattering of the electrons in the experiment displays what we term...
  15. Petyo

    Reflection and Diffraction

    so 'diffraction' is similar to 'reflection' ?@@
  16. Petyo

    Reflection and Diffraction

    @@ you know the Bragg's X-ray diffraction experiment? Some books use the term "Bragg reflection"...
  17. Petyo

    Reflection and Diffraction

    Can any please explain the differences between those two? As far as I know, 'diffraction' means bending or spreading out of waves around an obstacle-but is "diffraction" simply a change in direction of waves through a specific angle? If so, is it also "refraction"?
  18. Petyo

    Help with Quanta to Quarks!

    @Pwnage101: I'm just a little bit confused. Do you think that word "energy level" can be used when talking about classical physics? Because, as you stated, according to classical physics- energy is not quantised- So since "energy is not quantised", how come the concept of "energy levels" could...
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