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Search results

  1. Jaf

    Distinctions 2013

    People are going crazy on the CIE facebook page too. Not a week passes by without someone putting the query to them on their timeline. Aik taraf logon ko pass na hone ka darr khaye jata hai to doosri taraf in sab parhaakoon ko distinction na aanay ka dar khaya jaa raha hai. :rolleyes: Khayr...
  2. Jaf

    May/June 2012 Distinctions?

    It says on the Facebook page of CIE that they expect the names to be announced within the first 2 weeks of February (2013 ofcourse).
  3. Jaf

    my result in english AS level................

    A friend I know who self-studied got a B.
  4. Jaf

    Volunteer work at SIUT karachi

    I emailed them last year and they said they don't accept individual volunteers but only accept volunteers through direct contact with the school of the student. -_- I live outside Pakistan.
  5. Jaf

    Biology P11 , HOW WAS IT?

    Excuse me? It does. Glycerol is the molecule with no C=O bond (it's a tri-ol).
  6. Jaf

    Bye, bye XPF! ^_^

    Bye, bye XPF! ^_^
    • Jaf
    • Profile post
  7. Jaf

    As physics p1 MCQS YEARLY ONLY.

    1st one, in the center of the screen we know there will be a bright fringe. Also, the bright fringe happens because of constructive interference. The principle of superposition states that the total amplitude will be the sum of the individual amplitudes in a constructive interference and since...
  8. Jaf

    AS Physics P1 MCQs Preparation Thread.

    ^It's B.
  9. Jaf

    AS Physics P1 MCQs Preparation Thread.

    Would someone be kind enough to help me in June 10 variant 2 question 34. (I know this has been asked hundreds of times before but I can't find the sol. now). Also, Nov 09 variant 2 question 18.
  10. Jaf

    AS Physics P1 MCQs Preparation Thread.

    I think if, rather than taking the base of the tube, you take x as your starting point, you will get the right answer because density of P would Pressure/g2x and density of Q would be Pressure/gx, which gives 0.5.
  11. Jaf

    AS Physics P1 MCQs Preparation Thread.

    Although I am not sure, I believe the answer is 2/3. The way I did it was: Density (P) = Pressure/g3x Density (Q) = Pressure/g2x Density of P/Density of Q = (Pressure/g3x) / (Pressure/g2x) = Pressure/g3x * g2x/Pressure The Pressure for both...
  12. Jaf

    AS Physics P1 MCQs Preparation Thread.

    D -2mu This is because if it rebounded and is going in the opposite direction, and for example, the change was just mu, the ball would stop because mu - mu = 0. Since it is also going in the opposite direction at the same speed as before, it is -2mu
  13. Jaf

    AS Physics P1 MCQs Preparation Thread.

    I am sorry but I don't have any idea about how to do 11. On 12, however, the answer is found as follows: It gives us the torque. Now, torque is just the moment on an object moving about an axis and, so, the equation for moment (moment = force * perpendicular distance from pivot) will also...
  14. Jaf

    AS Physics P1 MCQs Preparation Thread.

    If you can understand from the notes someone posted, that's good but if you can't, I'd suggest you check this video: It's quite the best I have found on potentiometers, a subject on which you don't find much good stuff on the internet. I really found it helpful so try it. :)
  15. Jaf

    AS Biology P1 MCQs Preparation Thread

    Don't worry! :) In fact, there is no need to thank me. :)
  16. Jaf

    AS Biology P1 MCQs Preparation Thread

    ^32+
  17. Jaf

    AS Biology P1 MCQs Preparation Thread

    I don't see what is confusing you. They are also saying that the cell wall is present. What is confusing me is that they are saying there are no centrioles???? During metaphase, the centrioles are the one which produce the spindle fibres, no? It's HIV. Mary Jones give an example of Zidovudine...
  18. Jaf

    AS Biology P1 MCQs Preparation Thread

    Because they develop from eggs. Even though the eggs are unfertilised, since the eggs are made by meiosis, you have genetic variation and none of the eggs are same, and therefore neither are the male bees.
  19. Jaf

    AS Biology P1 MCQs Preparation Thread

    34, fIrst you need to see that in sample 3, when uracil is 25, C is nil, which means C is THYMINE because the two are never found together. Once you have found that C is Thymine, whichever base is the same/nearly the same as C is adenine because, due to base pairing specificity, the two have to...
  20. Jaf

    AS Biology P1 MCQs Preparation Thread

    Yes, that's how they are loaded at the source but the point is that the sources are the photosynthesising leaves, while the sinks are other parts of the plant, like the roots, storage organs. So, when the sugars are loaded into the sieve elements of the leaves, this means that there is more...
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