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  1. autumnsakura

    Physics: Post your doubts here!

    the liquid has to move. If liquid increase in one tube, it has to come from somewhere which is the another tube. So as liquid increase, liquid decrease kinda thing....Another example, if you have 5 apples each in two basket and you had to move 2 apples from one basket to another, one basket has...
  2. autumnsakura

    Physics: Post your doubts here!

    I think answer should be D. When the liquid moves up the right tube, it actually moves down the left at the same distance. So for example, your right tube liquid increase by 10, your left tube decrease by 10. The h difference between both tubes is actually 20 which is twice of the actual...
  3. autumnsakura

    Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w09_qp_12.pdf Q12,13,14 thanks!!
  4. autumnsakura

    u r welcome ^ ^

    u r welcome ^ ^
  5. autumnsakura

    Chemistry: Post your doubts here!

    I am sorry I accidentally put the wrong answer for Q39. Thanks!! I have another question: http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_13.pdf Question number 37. Answer is A :)
  6. autumnsakura

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w05_qp_1.pdf Question 39 please :) Answer is C http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w06_qp_1.pdf Question...
  7. autumnsakura

    Chemistry: Post your doubts here!

    For 1, Ca ions are replaced with 2 H ions so H2SO4 is formed. Now it reacts with KOH. But 1 mol of H2SO4 reacts with 2 mol of KOH. no of mol of KOH=2.5 x 10-4 so no of mol of H2SO4 is half of that= 1.25x10-4 Using m=no of mol x volume, you'll get the answer for concentration of CaSO4 which is A...
  8. autumnsakura

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w03_qp_1.pdf I don't understand question 28 (answer B) and 40(answer D) For q40, why can't the second choice be correct as well?
  9. autumnsakura

    A level Biology: Post your doubts here!

    maybe we should focus on 'including other drugs'?
  10. autumnsakura

    A level Biology: Post your doubts here!

    thanks! I have another question on NPP. So does NPP include respiration energy? Refering to question 39. http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w11_qp_12.pdf The answer is B so does it means 1200 + 5000 divided by 1 000...
  11. autumnsakura

    A level Biology: Post your doubts here!

    Can cell wall restrict entry of water? Referring to question 14. The answer says D http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w10_qp_11.pdf
  12. autumnsakura

    Biology practical on Thursday

    i m taking it too! variant 34 here ^^
  13. autumnsakura

    yes and the titration part was confusing. And I noe my salt analysis is kinda wrong. sigh. have...

    yes and the titration part was confusing. And I noe my salt analysis is kinda wrong. sigh. have to work harder on paper 1 and 2.
  14. autumnsakura

    oh, I'm variant 13. Oh god, chem practical sucked for me today :(

    oh, I'm variant 13. Oh god, chem practical sucked for me today :(
  15. autumnsakura

    Chemistry prac p34

    I think its useful to practice all the calculations you did for your practicals again. Get a hang of no of moles and concentration. Most of the time, there would be effervescence means there's gas. Test with litmus paper. Blue turning red means CO2 or SO2 (acidic gases). Red to blue would be...
  16. autumnsakura

    Busy studying so sorry for late reply..Yours is what variant? I'm having it on 16 oct. oh god...

    Busy studying so sorry for late reply..Yours is what variant? I'm having it on 16 oct. oh god, now I'm worried for my math...
  17. autumnsakura

    The only ting you could do is to repeat practice the past years you have. Like erase and do...

    The only ting you could do is to repeat practice the past years you have. Like erase and do again. I do that. Sometimes the older past years are a bit troublesome do to difference in syllabus and papers. Plus I'm only taking AS so it was hard for me to browse for questions to do. When is your...
  18. autumnsakura

    wow. that's really a challenge. If you could get your hands on past years dating back to 1980s...

    wow. that's really a challenge. If you could get your hands on past years dating back to 1980s and 1990s, it would be good too. My school library has books on those with solutions. If you finished the past years, it would be good to work on those.
  19. autumnsakura

    physics help needed on basic electronic principles

    you're welcome :D
  20. autumnsakura

    yay! we're the same batch then :)

    yay! we're the same batch then :)
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