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  1. Dayyanah

    An attemp to give children back their mothers

    U r seeing the coin from one side... just the way these parents dint even know their son was out all nyt, a working woman wont even b sure if her teenage kid wakes up for school or how he feels in the morning... the boy burnt his sister, werent both parents home? Dint the father show the burn to...
  2. Dayyanah

    Chemistry: Post your doubts here!

    I think it shud b A bcz carbon is found in different allotropes such as diamond and graphite so it needs to be converted to a single atom first. Hydrogen is found as a diatomic molecule and that too needs to b atomised then comes the enthalpy of formation. Im not 100% sure but i think thats how...
  3. Dayyanah

    An attemp to give children back their mothers

    Amazing video.. although, not everyone will agree...
  4. Dayyanah

    Chemistry: Post your doubts here!

    I need help with mass spectrometer in applications... how do u draw the peaks n how are their heights calculated?
  5. Dayyanah

    Physics: Post your doubts here!

    Hey i have my P4 mocks tomo... anyone with any last minute notes... its wud b really helpful notes.. thanx!
  6. Dayyanah

    Chemistry: Post your doubts here!

    http://www.mediafire.com/?dgcbc88stxh5f#ky26680wf3ich I dont know if it will work.. the papers arent there on the papers area... P52 and 53
  7. Dayyanah

    Chemistry: Post your doubts here!

    I kinda need help with chem oct nov 2011 p53 Qn 1 e) The ms says 5 marks for; names of gas, Mr, time of effusion, rate of effusion and the units of everything.. im sorta confused, wats the unit of rate of effusion? Grams per mol per second? And oct nov 2011 p52 Qn 2a) its says to calculate log...
  8. Dayyanah

    Chemistry: Post your doubts here!

    Try studyguide.pk its got alot of helpful stuff
  9. Dayyanah

    Physics Application HELP !

    Put sub topics on youtube, watch those videos... they r really helpful
  10. Dayyanah

    Oct/Nov 2011 papers

    Thanx a looot
  11. Dayyanah

    Oct/Nov 2011 papers

    Hey.. i need oct/nov 2011 papers for bio chem n phy, p4 and p5 Is there anyone with the papers willing to share?? I'd really appreciate it.. thanx!
  12. Dayyanah

    Physics: Post your doubts here!

    ure welcome, nytym
  13. Dayyanah

    Physics: Post your doubts here!

    37. the formula for resistance is resistivity*length/area. both the resistors are made of copper so the resistivity is the same. note the question specifically mentions that the second resistor is made of equal length. and at the beginning it says that the amounts were the same. it is not the...
  14. Dayyanah

    Physics: Post your doubts here!

    13. look for the horizontal component for the force which will be 8cos 30. that the force then find torque T=2Fr F is the force you got, r is half the distance between the two forces because tourqe will result in turning effect about the center.
  15. Dayyanah

    A level Biology: Post your doubts here!

    hey, am not sure how well my answer will help u coz im not really a pro but it might just give u a gist of how it works once the water is inside the xylem,it has elongated cell wall which are lignified to allow the water to pass through smoothly down the water potential gradient. the cohesion...
  16. Dayyanah

    A level Biology: Post your doubts here!

    yeah... tried tht lyk a million tyms, i cant download if for some reason evn with the mega upload account... but thnx i got another pic tht explains it all really well..
  17. Dayyanah

    Physics: Post your doubts here!

    any one pls help! show how simple pendulum exerts simple harmonic motion thnx
  18. Dayyanah

    A level Biology: Post your doubts here!

    for anyone like me who needs help with synapses
  19. Dayyanah

    A level Biology: Post your doubts here!

    hey i have a few qns i need help with 1. explain why a nerve impulse travels faster in a myelinated neurone than in a non-myelinated one? (refer to saltatory conduction) -2 marks 2. explain what happens to the neurotransmitter after it has passed information across a cholinergic synapse -3...
  20. Dayyanah

    A level Biology: Post your doubts here!

    @ sweetiepie thanx aloooooot @ rviboy once agen, thnx
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