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  1. G

    9709 MATHS P3 O/N 2009 32 {Q7 (ii), (iii), (iv}

    please anyone!! its urgent :%)
  2. G

    9709 MATHS P3 O/N 2009 32 {Q7 (ii), (iii), (iv}

    I have a small doubt in complex numbers.... PLZ can anyone help me in doing these 3 subparts :) MATHS P3 O/N 2009 32 {Q7 (ii), (iii), (iv}
  3. G

    9709 Mathematics P3 O/N 2004 [Q3 (iii)]

    thank u ahmed :)
  4. G

    9709 Mathematics P3 O/N 2004 [Q3 (iii)]

    I solved the first part and got a = -3 i did the second part and got the other factor of p(x) (i.e. 2x^2 + x + 2) now i didn't understand the (iii) part and the marking scheme is not clear :unknown: Please can anyone help :D ?
  5. G

    Maths P3 9709 M/J 2010 (1st variant) Qn1

    okkay.... i got it :Yahoo!:
  6. G

    Maths P3 9709 M/J 2010 (1st variant) Qn1

    i cant apply the formula of quadratic equations!! :(
  7. G

    Maths P3 9709 M/J 2010 (1st variant) Qn1

    Finding Modulus Question I use the method of squaring both the sides, so when i did, i reached till the step: -3x^2 + 22ax - 7a^2 > 0 its a quadratic eqn but how to to solve it with (a) ?? :unknown:
  8. G

    physics A2 help

    Left hand rule is used when the direction of current and the direction of magnetic field is given and u have to find the movement of the wire/ current carrying conductor Right hand rule is used when the movement of of the wire/ current carrying conductor and the magnetic field is given and u...
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    Physics 9709 p4 m/j 2005 qn 7 (a) graph and (c) part

    can any on draw the graph and keep it as an attachment... i'm confused whether it a decreasing graph (going downwards) or increasing graph (going upwards).. the only piont i know is the half life point (2.6, 0.7) i didn't undrstand the (c) part can anyone explain? :) :)
  10. G

    Urgent!! Physics p4 O/N 2006 Qn 6 (b) graph

    Help me finding the period.. i got the peak value in a (i) part to be 8.5 so 2.0Vcm^-1 ----- 1 cm 8.5Vcm^-1 ----- (4.25) 4.25 squares along y axis please help me for x axis :D
  11. G

    PHYSICS APPLICATION

    U can find the answers 1. M/J 2008 qn10 2. Acoustic impedance is the product of the density (ρ) of the medium and the speed (c) of the medium. 3. Non invasive techniques are designed to present a much smaller risk than surgery and are in general far less traumatic for the patient 4. •Reduces...
  12. G

    PHYSICS APPLICATION

    can anyone explain to me the piezo electric crystal (pg 19 in APPLICATION BOOKLET) about the compressed and extended diagrams i wud like 2 know how the polarity of the potential differences causes these changes?? :unknown: thnxs
  13. G

    PHYSICS APPLICATION , AGAIN!!!

    @working hard:yes it is 1900, my mistake :D
  14. G

    PHYSICS APPLICATION , AGAIN!!!

    Please can anyone correct my steps and explain to me whether my conclusion is right or not? :good: There are two qns that are nearly similar, about application: 1. Specimen paper 4, Qn 8 2. O/N 2009 41, Qn 10 I did the specimen paper qn and understood the concept :) ok now i did the o/n...
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    9702 PHYSICS P4 SPECIMEN PAPER QN 8 (b)

    part (i) 2. * mmm i need to know how we took 800 as the R and didnt consider the thermistor (2200)? * for part 3. the output will be -9.0 because the inverting (-) voltage (4.5) is greater than the non-inverting (+) voltage 2.4. Ok in the application booklet it says that when the output exeeds...
  16. G

    URGENT!! Physics Application p4 o/n 2009 42 Qn 11

    Thank U Beacon Of Light :)
  17. G

    URGENT!! Physics Application p4 o/n 2009 42 Qn 11

    Please can anyone help me solving this qn :) i 've a doubt in finding the frequencies of both the carrier wave and the information signal i know only abt f=1/T but i dont know how 2 take the time periods of both?? thnks. :mrgreen:
  18. G

    Physics p4 help m/j 2008 qn 1 (b)

    HEEEY I GOT IT :p. SORRY !!!
  19. G

    Physics p4 help m/j 2008 qn 1 (b)

    i did the following: d = 0.35 0.72 W = mdω^2 0.72 x 9.81 x m = m x 0.35 x ω^2 ω^2 = (0.72 x 9.81) / (0.35) ω = √(0.72 x 9.81) / (0.35) ω = 4.49 now i have a doubt to find (n), the no. of revolutions per minute :) ? HELP ME =)
  20. G

    MATHEMATICS 9709 O/N 2010 33 Qn 6 Help!!

    please, can u calculate the value of the angle and tell me cuz im not getting the correct value from the marking scheme??
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