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  1. H

    As physics p1 MCQS YEARLY ONLY.

    dsinx = n x wavelength for the diffraction grating lines per meter = 1 x 5.7 x 10 ^-7 / sin (15.4 ) = 1.9958 x 10 ^-6 lines per m now to find x for the seoncd order 1.9958 x 10 ^-6 x sin x = 2 x 5.3 h 10 ^-7 = x = 32.1 degree the difference between the first and second order is therefore...
  2. H

    As physics p1 MCQS YEARLY ONLY.

    mass of air that hits the wall per second = 12 x 33 x 1.2 = 475.2 change in momentum = 33 x 475.2 = 15681.6 = 16000
  3. H

    As physics p1 MCQS YEARLY ONLY.

    yes I have!! :D
  4. H

    As physics p1 MCQS YEARLY ONLY.

    thank you Hadi Murtaza :)
  5. H

    As physics p1 MCQS YEARLY ONLY.

    thank you Hadi Murtaza :)
  6. H

    As physics p1 MCQS YEARLY ONLY.

    Thought blocker please explain this to us~ i understand it but i need further explaination! :)
  7. H

    heeey

    heeey
    • Hanona
    • Profile post comment
  8. H

    As physics p1 MCQS YEARLY ONLY.

    here you use the formula v(out) = V(in) x ( R/ R total) here v in means the e.m.f = v out is 2 r total is 2R + R + 3 R = 6 R since theyre in series 2 = v in x ( 2R/6R ) v in = 6 V
  9. H

    As physics p1 MCQS YEARLY ONLY.

    electric force = voltage/distance= 12/(1 x 10 ^-3) = 12000 N/C now work done = f x d f = charge x electric force = 3.9 x 10 ^-6 x 12000=0.0468 work done = 0.0468 x 1 x 10 ^-3 = 4.7 x 10 ^-5
  10. H

    As physics p1 MCQS YEARLY ONLY.

    the volume is 340 m^3 per minute .. so the mass is = density x volume = 340 x 1000 = 340000 you need to calculate power to determine the power out so power = work done / time work done is equivilant to the gain in potential energy which is mgh = 340000 x 9.81 x 30 =100062000 power = 100062000/...
  11. H

    As physics p1 MCQS YEARLY ONLY.

    hahaha lol i was a minute late !
  12. H

    As physics p1 MCQS YEARLY ONLY.

    q 17 k.e = 0.5mv^2 = 1500= 0.5 x m x 10^2 = m= 30 Kg .... now the speed is 40.. k.e = 0.5 x 30 x 40 ^2 = 24KJ q 19 ... mass of water = density x volume = 1.5 x 1000 = 1500 mass of alcohol = 0.5 x 800 = 400 total density = total mass / volume = (1500+400)/2 = 950 q 20 thats basic stuff... or...
  13. H

    As physics p1 MCQS YEARLY ONLY.

    ahhh!! got it :D thank you ! I really dont know what we all have done without you solving our doubts !^_^ youre awesome
  14. H

    As physics p1 MCQS YEARLY ONLY.

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w10_qp_11.pdf q no. 34 please anyone :(
  15. H

    Physics Practical paper 32

    anytime :D
  16. H

    Physics Practical paper 32

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s11_qp_32.pdf for instance in this paper you were asked to plot on y axis (1/H-h)^2 ) and on x axis m^2 now in the equation they have given you replace 1/(H-h)^2 as y and m^2 as x...
  17. H

    Physics Practical paper 32

    perhaps may/june 2013 32 ;O my teacher told me to practice that
  18. H

    Physics Practical paper 32

    the perentage difference..; how do we calculate it ?:/ there are several way on every site and i got confused .. do we take the average or not??
  19. H

    As physics p1 MCQS YEARLY ONLY.

    Anytime friend ^_^
  20. H

    As physics p1 MCQS YEARLY ONLY.

    Thank you !:) so are you as well
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