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  1. A

    Physics: Post your doubts here!

    well.. you see X's motion can be represented using a cosine wave. For Y, a phase angle of 2pi/3 means cos(2pi/3) = -.5 So Y is 0.5* 4= 2.0 cm above the ean position, moving upwards (2pi/3 is less than 2pi indicating that the wave is not complete.. so Y moves upwards) => My logic :P
  2. A

    Physics: Post your doubts here!

    10. You're right. I misread the scale
  3. A

    Physics: Post your doubts here!

    I get why they've written 4. I just think that Y and Z should be positioned 2.0cm above AB. I don't get why it's 3.0..
  4. A

    Physics: Post your doubts here!

    Gain = 10 maximum value of output voltage = 9V since the op-amp becomes saturated at that point G= Vout/Vin for Vout = 9V, Vin is 0.9 which is approximately equal to 1V. So you start your graph at the origin. Draw a line such that Vout= 9V when Vin= 1V (that happens after 5 small squares on...
  5. A

    Physics: Post your doubts here!

    I'm assuming that you got the answers for the previous two parts.. for part (iii), Intensity received back= (intensity reflected at the muscle-bone boundary)e^-(23 * 4.1 * 10^-2) [ e^-(23 * 4.1 * 10^-2) = 0.39] intensity of the wave incident...
  6. A

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_w10_qp_43.pdf Can someone please try Q3b? Our teacher says it's not in the syllabus. I personally think there's a misprint in parts (i) and (ii) but I'm not sure.. if not, why is...
  7. A

    SSE Prep

    Aoa! Is any one of you appearing for LUMS SSE Examination? If yes, how are you going about it? Most of my seniors who got in say that they studied nothing but their A'level notes but then there were a few people who said that the SSE is based on FSc books. :/ I don't really want to join an...
  8. A

    NET PREPARATION

    For NET-3? O.o
  9. A

    Hey.. do I know you?

    Hey.. do I know you?
    • aleezay
    • Profile post comment
  10. A

    Preparing for the SAT Reasoning Test

    1. Cant say. A few people take a trial in January. Others give it in A2 (in Oct) with full prep (which isnt the case when it comes to me :P) 2. 2years Ive heard 3. Any two of Math, Physics and Chemistry- giving all 3 is a more common option 4. Depends. Take a diagnostic test and decide for...
  11. A

    Preparing for the SAT Reasoning Test

    abcde I miss receiving guidance from you. :/
  12. A

    Preparing for the SAT Reasoning Test

    This is going to be a looong post, but, here goes: I decided to give the SAt in July. I got registered for the upcoming Oct session and started prepping. I read most of Barrons and Princeton. I got an 1800 in my diagnostic test (before prepping, that is) After that Ive solved a total of 12...
  13. A

    Chemistry: Post your doubts here!

    Somebody please reply fast.. i have 2 hours left. Im done with all the papers back till 2002. Ive gone through my notes once. what should i do right now?? chemguide or the book (coursebook by David Acaster) plz note that I have 2 hours only and went through each looong way back :p
  14. A

    Physics: Post your doubts here!

    Its D
  15. A

    Physics: Post your doubts here!

    Which is more plastic? A metal or its alloy? eg iron or steel? I say steel.. :/
  16. A

    TAIMAAA!!! :))

    TAIMAAA!!! :))
    • aleezay
    • Profile post comment
  17. A

    AS BIOLOGY P-33

    I know that.. pehle present se deal kr len future ki sochnay k liay vacations hen :P
  18. A

    A level Statistics doubt??Post your doubts here!

    Advantage? :D You still got to know this beforehand. I first came across such a thing in my final exam :D
  19. A

    A level Statistics doubt??Post your doubts here!

    Just dont worry! This isnt something I knew.. It was just an assumption. Except, I was sure of it cz a similar question came when I appeared for Olevel Statistics :)
  20. A

    A level Statistics doubt??Post your doubts here!

    I didn't use any formula, its just an assumption. Thats what we used to do in Olevel Statistics, so yeah.. Thanks for sharing these parameters though! :)
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