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  1. R

    Post Your AS LEVEL PHYSICS PAPER 2 DOUBTS

    And do stationary waves always have to be out of phase with each other?
  2. R

    Post Your AS LEVEL PHYSICS PAPER 2 DOUBTS

    quote="applepie1996, post: 301250, member: 29508"]ok for diffraction of transverse waves use a laser screen and a slit and pass the laser through the slits as the light passes through the slit it is diffracted so it spreads out onto the screen showing diffraction of transverse waves for...
  3. R

    Physics: Post your doubts here!

    In a filament lamp why does resistance increase when the voltage increases?
  4. R

    Post Your AS LEVEL PHYSICS PAPER 2 DOUBTS

    hmmm can u explain how terminal p/d is different from actual p.d??
  5. R

    Post Your AS LEVEL PHYSICS PAPER 2 DOUBTS

    help quickyly please: How to take out terminal p.d Is there a formula for it If the current of a wire increases, why does it short b/c its resistance should decrease right because current is increasing. And does I and R have inverse relationship and can anybody give examples as when to use it
  6. R

    Physics: Post your doubts here!

    i need the answer
  7. R

    Physics: Post your doubts here!

    how do we take out the terminal p.d
  8. R

    Physics: Post your doubts here!

    If the current of the bulb increases will it short. When the current will inc the resistance should decrease and it should not produce much heat energy so why does it short?
  9. R

    Physics: Post your doubts here!

    ty. and this is the whole question basically. A cyclist is travelling at constant speed so why will his chemical energy not convert to kinetic energy. I know that the energy change will be kinetic to heat and sound energy but why will the chemical energy not be converted to K.e thts the question.
  10. R

    Physics: Post your doubts here!

    How is P=Fv derived? A question from pastpaper:Explain why a cyclist travelling at a constant speed is not making this trnasformation. Explain what transformations are taking place?
  11. R

    A level Biology: Post your doubts here!

    How are liver and rbcs connected in the division of the maralial parasites in the body of humans???
  12. R

    A level Biology: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w10_qp_21.pdf 5c) shouldnt the third answer be j?
  13. R

    A level Biology: Post your doubts here!

    ty stem cells are cells of the marrow rite?
  14. R

    A level Biology: Post your doubts here!

    Hey guys help: name a part of the human body where B-cells are produced by division of stem cells? State two similarities and one difference b/w the structure of ribose and the structure of B- glucose?
  15. R

    A level Biology: Post your doubts here!

    What do the phosphate heads of the phospholips do.And why despite being polar they dont allow polar molecules to pass through them?
  16. R

    A level Biology: Post your doubts here!

    There was a qs in the pastpapers that how is DNA suited to do semi-conservation replication. Please answer and explain?
  17. R

    A level Biology: Post your doubts here!

    What do the phosphate heads of the phospholips do.And why despite being polar they dont allow polar molecules to pass through them?
  18. R

    Physics: Post your doubts here!

    how does a potentiometer work. And why does the current becomes o on the ammeter?
  19. R

    A level Biology: Post your doubts here!

    ok. And why does increased blood pressure increase the risk of coronary heart disease?
  20. R

    A level Biology: Post your doubts here!

    for example the making of polypeptides by DNA. where peptide bonds are built up that is a primary structure?
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