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  1. D

    COMPLETE 9702 PHYSICS NOTES ALL TOPICS

    superb!..superb!..thank you very very much :D
  2. D

    Phase Difference AS Level Notes

    Have fun with the phase difference notes. Explains everything very beautifully on how to determine phase differences and make new waves with phase differences to original waves. :D
  3. D

    Chem.p34 answer discussion...

    i gave 2 accurate titrations with 0.1 difference , so are 2 accurate titrations satisfactory ?..i read it in mark schemes that it is if the difference is within .1 cm3!
  4. D

    please inbox me the expected questions for chemistry practical tomorrow..would be really indebted !

    please inbox me the expected questions for chemistry practical tomorrow..would be really indebted !
  5. D

    AS Chemistry P2 Prep.

    still, SO2 has a bond angle of 120 degrees (trigonal planar)..in our syllabus ! I guess so
  6. D

    AS Chemistry P2 Prep.

    Remember the equation : CxHy + x+0.25yO2 gives XCO2 + 0.5H2O you can see that to get the question in this form you have to simplify the moles of the hydrocarbon to 1. So 50(hydrocarbon), 300 (Oxygen), 200( Carbon Dioxide)..simplifying the hydrocarbon to 1: 1 (hydrocarbon) 6(oxygen), 4 (Carbon...
  7. D

    Mechanics 42

    Tension was 9 N. and thats confirmed. in Question 2
  8. D

    Mechanics 42

    At the top of the hill velocity was 10m/s
  9. D

    Mechanics 42

    we had to draw displacement time graph in the last part, and because it was constant deceleration. The displacement time graph is a curve form retardation. (ALWAYS)
  10. D

    Mechanics 42

    After leaving Y it was -1. We had to state the values of v. Where v was the velocity in the direction of XY, So when it travels YX the velocity was to be quoted with negative sign. So -1 m/s
  11. D

    Mathematics mechanics p4

    pulley, inclined plane, energy, Forces in Equilibrium and most probably kinematics, though this is just my guess :P
  12. D

    AS Mathematics - P1 & M1 Post you doubts here!

    For Q5 (iii) The difference in height taken is (2.45-1.2)= 1.25 metre. Because this is a smooth surface we dont have to get confused between the change when travelling from N to M. So Loss (K.E) = Gain (P.E) Put the height to get the potential energy and calculate the velocity from the lost...
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    M1 doubts

    Remember the question asks : find the total distance travelled by Q from the instant it first reaches X until it returns to X. hahah man you have done 99% of that question..but failed to obtain the right answer. The distance you calculated 0.4 metres is the distance the particle travels from X to...
  14. D

    M1 doubts

    Tension in AP1 is 5.5 N, and in CP2 is WN. Because the particles are in equilibrium , TENSION= Weight. Now because they are attached with a smooth pulley, P1X will also have a tension of 5.5 N. Similarly, P2X will have a tension of W N. I hope things are clear till this extent. Now consider the...
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    M1 doubts

    One doubt..Anyone feel anything wrong in this particular question? Q3 http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w11_qp_43.pdf Because i feel something wrong about the question!! :( No the question is fine, no problem in it just needs...
  16. D

    paper 12 chemistry ...

    W X Z
  17. D

    paper 12 chemistry ...

    Dude that was a tertiary alcohol..
  18. D

    paper 12 chemistry ...

    The Cracking One was a simple question. The Answer was W X Z. Cracking of Alkane Produces: Alkanes (Same as Reactant) + Alkene (Addition Of a Double Bond to the reactant molecule) Cracking Of Alkene Produces : Alkene (Same as Reactant) + DiAlkene ( Addition of A Double Bond to the reactant...
  19. D

    paper 12 chemistry ...

    it was A, all options had a trigonal planar shape.
  20. D

    paper 12 chemistry ...

    That Was W,X,Z because Cracking Of Alkane gives : Alkene and Alkane Similarly Cracking Of Alkene (as in the question) gives : Di Alkene and Alkene
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