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  1. Scafalon40

    Mathematics: Post your doubts here!

    Paperhttp://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_12.pdf Markshcemehttp://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_ms_12.pdf examiner report not...
  2. Scafalon40

    Yeah do that!

    Yeah do that!
  3. Scafalon40

    A level Biology: Post your doubts here!

    Honestly do you think I hadn't thought of that:p
  4. Scafalon40

    A level Biology: Post your doubts here!

    I should tell you? I was hoping that you could interpret that mark scheme for me!:LOL: That's why I posted!:p
  5. Scafalon40

    A level Biology: Post your doubts here!

    :(
  6. Scafalon40

    A level Biology: Post your doubts here!

    Read the examiner report too, it says so
  7. Scafalon40

    A level Biology: Post your doubts here!

    Guys why won't you answer?
  8. Scafalon40

    A level Biology: Post your doubts here!

    Another question: Paper:http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s07_qp_31.pdf Mark Scheme:http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s07_ms_31.pdf Examiner...
  9. Scafalon40

    A level Biology: Post your doubts here!

    A query about dilution series It's simple: why do we do it? I mean to get from a solution of 1 moldm^-3 to a solution of 0.0001 moldm^-3 why do we do three dilutions when we can do it with just one dilution using the formula C1V1=C2V2 I just don't get it, and in the exam we are expected to do...
  10. Scafalon40

    Physics: Post your doubts here!

    And did it ever occur to you that on one of the front pages of their syllabus for any subjects they include: And I quote: BLOODY HELL IF IT'S A 'NOT FOR PROFIT' ORGANIZATION THEN WHY DID I HAVE TO PAY ABOUT Rs 80 000 FOR MY O'LEVEL EXAMS AND ANOTHER Rs 50 000 FOR MY A LEVELS Would somebody tell...
  11. Scafalon40

    Significant Figures

    So I'll just use the full calculator display... Problem resolved. I thank everyone who participated(even though it was only two members!:D)
  12. Scafalon40

    Physics: Post your doubts here!

    So basically you are questioning the the examining body whose papers you have given in your O'levels, and whose papers you are about to give in your A'levels; the very examining body which gives you your grades after years of hard work; the examining body which has world wide recognition, and...
  13. Scafalon40

    Significant Figures

    I do have the Casio fx-991 ES calculator and I have been using this fraction technique you just described with it for a long time now, that was not my question I want to know weather the examiners will penalise me not if I don't use rounded off versions of the answers, as they have in their...
  14. Scafalon40

    Physics: Post your doubts here!

    Lets try and discuss it. Al right so we know that change in momentum is =m(change in velocity) So that means that the change in velocity must be (4+0.8) for the answer to be correct But change in velocity being (-0.8-4) makes more sense, since we have been taught that change in velocity=(v-u) So...
  15. Scafalon40

    Physics: Post your doubts here!

    Check out what the examiner report has to say:http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_er.pdf The marking scheme and the examiner report agree with each other: the velocities must be added, not subtracted First of all : DO YOU...
  16. Scafalon40

    Significant Figures

    Of course I did!:)
  17. Scafalon40

    Physics: Post your doubts here!

    BUT THAT IS EXACTLY WHAT I DON'T UNDERSTAND! The change in momentum is supposed to be m(v-u), isn't it? Then shouldn't it be 1.2(-0.8-4)?
  18. Scafalon40

    Physics: Post your doubts here!

    But the marking scheme states it to be +57.6 Also it states the working to be 1.2(4+0.8) Here:http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9702%20-%20Physics/9702_s09_ms_2.pdf
  19. Scafalon40

    Physics: Post your doubts here!

    http://www.xtremepapers.com/CIE/International A And AS Level/9702 - Physics/9702_s09_qp_02.pdf Q.2 part b(i) isn't the change in momentum suppose to be mv-mu? I can't solve part b(i), please help! My answer comes out to be -57.6, its supposed to be +57.6
  20. Scafalon40

    Significant Figures

    Happy?:D
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