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  1. EdmundH

    Results shown on net are raw or UMS marks? (AS)

    So I was wondering whether the results I got through the net is in UMS marks or raw marks? If its in UMS then what's my raw mark? Help pls!! :/
  2. EdmundH

    Physics: Post your doubts here!

    thx but dont ever say u're dumb! Good luck in ur exam!
  3. EdmundH

    Physics: Post your doubts here!

    erm, difference = right - left = x + h - (x - h) = 2h or either way which u get -2h (u just wan the magnitude of difference anyway)
  4. EdmundH

    Physics: Post your doubts here!

    Oct09 Q12. since the btm belt is slacked, so tension is only at the upper belt, torque at Q = 3.0 N m, so 3.0 = T x (100 x 10^-3)/2 T = 60N Torque at P = T x (150 x 10^-3)/2 = 4.5 Q13. assuming it is projected with velocity v, so the initial KE, E= (mv^2)/2 at the highest point, the vertical...
  5. EdmundH

    Physics: Post your doubts here!

    U got trolled by the one who set this question lol, (me too actually xD) u see, when the right tube raise by a height h, the left tube too will raise through a height h, (imagine the water flowing from the left tube to the right tube) so the change in height is acutally 2h
  6. EdmundH

    Physics: Post your doubts here!

    I've got it from my friend, i think his explanation sounds more reasonable : when mass is added, velocity decreases due to the increase in mass (p = mv), where p is a constant, when the sand is realeased, looking a the truck itself there's loss in mass, but if we look at the sand and the truck...
  7. EdmundH

    Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w11_qp_12.pdf question 10 need help urgently~! From my knowledge, momentum is constant if there's no external force acting on a system, so p = mv for the truck, since p is constant, when...
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