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  1. S

    AS physics MCQ! URGENT plz help guys

    cool i got it.
  2. S

    AS physics MCQ! URGENT plz help guys

    Thanks!
  3. S

    AS physics MCQ! URGENT plz help guys

    But why are they connected in parallel? I thought they were separate?
  4. S

    AS physics MCQ! URGENT plz help guys

    Can you attach a larger picture though? I cannot read it. Thanks though :D
  5. S

    AS physics MCQ! URGENT plz help guys

    http://olevel.sourceforge.net/papers/9702/9702_s13_qp_13.pdf q34 & q35 Thanks in advance!
  6. S

    Physics: Post your doubts here!

    Ok i get the second question now. Thanks!
  7. S

    Physics: Post your doubts here!

    Yea it is position 2
  8. S

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w09_qp_12.pdf ok Q11 & 12
  9. S

    Physics: Post your doubts here!

    and this plz~
  10. S

    Physics: Post your doubts here!

    plz help :D
  11. S

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w12_qp_11.pdf Q37 please Dont understand why you need E2 to work out the P.D
  12. S

    Chemistry: Post your doubts here!

    Ok. but what i dont get is why they are not the same empirical formula? Because if 2 compounds have the same molecular fomula, doesnt that mean they have the same empirical formula as well >< confused.
  13. S

    Chemistry: Post your doubts here!

    Yea i did type it wrong -_- its Q4 (b) (v) What is the relationship between the repeat unit of polymer D and the repeat unit of PVA.
  14. S

    Chemistry: Post your doubts here!

    p42 MJ 11 Question 4(c) (v) can someone help? Why is it molecular formula and cannot be empirical formula? I thought if you have same molecular formula you literally should have the same empirical formula? correct me if im wrong:confused:
  15. S

    A level Biology: Post your doubts here!

    Just a question. Are we allowed to write long words in simplified notations? Eg. Proximal convoluted tubule as PCT?
  16. S

    A level Biology: Post your doubts here!

    It does! Thanks.
  17. S

    A level Biology: Post your doubts here!

    The cells needs to uptake CO2 for use in the Calvin cycle, and excrete O2 which is produced in the cells through photolysis, through the stomata. Cell needs to uptake water, to be used in the light dependent stage of photosynthesis. Is this ok?
  18. S

    A level Biology: Post your doubts here!

    Can somebody help me? During stomatal closure, why is the water potential of the guard cells higher than epidermal cells?
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