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  1. Z

    Physics: Post your doubts here!

    Guys for Q.2 its not possible that you use absolute uncertainty in calculating % uncertainty because the method of performing experiment is inaccurate the uncertainty will always be higher than the 1 mm which is for metre rule,i went through many markschemes before paper and there was a range of...
  2. Z

    Chemistry: Post your doubts here!

    In China, the concentration of blood glucose, C6H12O6, is measured in mmol / l . In Pakistan, the concentration of blood glucose is measured in mg/ dl. The unit l is a litre (1dm3 ). The unit dl is a decilitre (0.1dm3 ). A blood glucose concentration of 18.5mmol/l indicates a health problem...
  3. Z

    Physics: Post your doubts here!

    nah that was the second question,no graph
  4. Z

    Physics: Post your doubts here!

    nope
  5. Z

    Physics: Post your doubts here!

    i did one where we had to pull a block up the board using a newton meter.
  6. Z

    Physics: Post your doubts here!

    do you have any more info?
  7. Z

    Physics: Post your doubts here!

    can you tell any error and improvements for scale balance experiment?
  8. Z

    Physics: Post your doubts here!

    any more tips for physics 33 tomorrow?
  9. Z

    9702 Physics Practical 33

    Can anyone post some good notes and tips for acing practical,like to how many sig figs data is to be given out,calculating % uncertainity etc.Plus does anyone have any idea which practical is coming?
  10. Z

    How did Physics P2 go?

    For physics AS Q.1 Units Ampere Kelvin Second part resistivity units=kg m3 s–3 A^-2 Resistance=18 ohm Precision:The smallest scale division of measuring instrument b part) the micrometer measure nearest to 0.01 mm compared with 1mm of metre rule so greater precision for micrometer...
  11. Z

    How was Mathematics 9709/12 ?

    My own score.
  12. Z

    How was Mathematics 9709/12 ?

    i hope it isnt leaked,according to those solutions i am getting around 71-72.
  13. Z

    How Was Chemistry Paper 22, MAY/JUNE 2017?

    The first was ethanoic acid and second methyl methonate in the ir part,what about the bonds in part a of that question? wrote CO and OH for acid and Not sure about ester,what about you guys
  14. Z

    How did Physics P2 go?

    no you werentt supposed to put up sign in the answer itself as it demanded only magnitude.
  15. Z

    How did Physics P2 go?

    Velocity one was easy,in the momentum one speed was o.30 ms^-1
  16. Z

    How did Physics P2 go?

    4.5^10-7
  17. Z

    How Was Chemistry Paper 22, MAY/JUNE 2017?

    i messed up that,was easy but i think i got nervous
  18. Z

    How did Physics P2 go?

    I got the cro right but i guess messed up in that destructive interference of water waves
  19. Z

    How Was Chemistry Paper 22, MAY/JUNE 2017?

    if u wrote NO2 role as a catalyst then you were supposed to write these ones S02+NO2-->SO3+NO NO+1/2o2-->NO2 Because a catalyst remains unchanged
  20. Z

    How was Mathematics 9709/12 ?

    Alright but can someone explain why the 24 hours limit? since the papers is already done
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