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  1. G

    Physics: Post your doubts here!

    what about them??
  2. G

    Physics: Post your doubts here!

    ok for this simply see, first the total clockwise moments and the the total anticlockwise moments, take the moments about the corner of the wall, that being ur pivot clockwise moments = F h + W a anticlockwise = W 2 a anticlockwise moments = clockwise moments F h + W a = 2 Wa
  3. G

    Physics: Post your doubts here!

    bestaa luck everybody! hope todays paper is a piece of chocolate fudge cake for ya! :D
  4. G

    A levels brought me down to my knees...

    just know that your parents don't love you in return for the grades you get for them. Its all rooted down to them wanting a good, safe and secure future for ya. They are probably just feeling a little insecure right now, once they see you doing good in your uni and heading off for a good life...
  5. G

    Physics: Post your doubts here!

    :oops:
  6. G

    Physics: Post your doubts here!

    use the formula for E E = F x L / delta L x A rearrange to get the ratio delta L / L on one side (change in length / original length) youll get >> delta L / L = F / E A (A = pi r ^2 ) = 20 / 2 x 10^11 x pi x (2.5 x 10^-4)^2 = 5.1 x 10^-4 multiply this by a 100 to get the % 5.1 x 10^-4 x 100 =...
  7. G

    Physics: Post your doubts here!

    ok when at Y, the body has traveled 40 m, in 12 seconds so the speed at Y is v = d / t = 40 / 12 = 3.3 ms^-1 this is going to be the initial speed for the length YZ the speed at Z = d / t = 40 / 6 = 6.6 ms^-1 this is the final speed for the length YZ now use v^2 = u^2 + 2as for YZ (6.6)^2 =...
  8. G

    Physics: Post your doubts here!

    when the pressure increases, the column on the right moves up by, h and the column on the right moves down by h. so the total change in height is 2h p = rho x g x delta h = rho g 2h ps. a little shortcut, it says the pressure increases, therefore the formula has to be something that would give...
  9. G

    Physics: Post your doubts here!

    24) the youngs modulus, E is the same for the same material, regardless of the length and cross sectional area, etc. the SAME STEEL is used, so E is the same 26) ok now the molecules at Q are 2r from the source and Intensity is inversely proportional to the distance from the source d = 2r >>...
  10. G

    Laptop or tablet???

    trust me vaio is good! check out Sony VAIO P :P yep. isnt too appealing either
  11. G

    Laptop or tablet???

    http://zenbook.asus.com/zenbook/?c=prime_ux32
  12. G

    Laptop or tablet???

    have you heard about the Asus zenbook??
  13. G

    Laptop or tablet???

    http://www.geek.com/laptop-processors/ the name of the website, what a coincidence ;)
  14. G

    Laptop or tablet???

    you can buy a netbook! trust me there great. small and no less than a tab, you can even carry em around. sony vaios are great...good colours, and good battery lives (y)
  15. G

    Physics: Post your doubts here!

    BettyBoop here, use the equation s = ut + 0.5 at ^2 and because the ball is dropped from rest >> u = o ms^-1 so s = 0.5 a t^2 rearrange and make a the subject of the formula >> a = 2s / t^2 now s = h and t will be the difference in the squares of t1 and t2 so a = 2h / ( t1^2 - t2^2 )
  16. G

    good too, alhamdulillah! =)

    good too, alhamdulillah! =)
    • geek101
    • Profile post comment
  17. G

    Physics: Post your doubts here!

    ok, the formula for pressure = density (rho) x g x h they want us to find the depths at which both the liquids will have the same pressure acting on them. the g = 9.81 ms^-2 for both d for X >> 800 kgm^-3 d for Y >> 1200 kgm^-3 now for each option multiply the d, g and h to get the pressure...
  18. G

    HELLO! long time, how are ya :D yep yep it is! thnx =P

    HELLO! long time, how are ya :D yep yep it is! thnx =P
    • geek101
    • Profile post comment
  19. G

    3 Word's Game....

    a painful punch
  20. G

    hi :) im giving my p4 and 5 in june next year =P good luck with urs!

    hi :) im giving my p4 and 5 in june next year =P good luck with urs!
    • geek101
    • Profile post comment
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