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  1. L

    GFX Desginers [Signature/Image creators]

    These are amazing. What software do you use to make these?
  2. L

    So you think you can answer this?

    By the way, that is one damn expensive shirt. :o
  3. L

    So you think you can answer this?

    It's because you aren't actually using $49 + $49 from your mom and dad. If the shirt is $97, then that means they are contributing $48.5 each. So if you pay them $1 each, then you still owe them .5 + .5 = $1 and that money is with you, so (mom's 48.5) + (dad's 48.5) + (1 dollar back to mom) +...
  4. L

    As physics p1 MCQS YEARLY ONLY.

    http://cl.ly/GDlv My teacher gave these to me.
  5. L

    As physics p1 MCQS YEARLY ONLY.

    We need to. Like 3 papers in a day. If 3 people do one separate paper in a day I guess we would be done in about 3-4 days which is still good enough because we'd still be left with time for revision. Anyway, I'll try to do both papers of 2007 today, hopefully by night InshAllah.
  6. L

    AS Physics P1 MCQs Preparation Thread.

    Q14) Forces in equillibrum must follow the closed triangle rule, there can't be head to head in any of the vectors, making B and C invalid. D is wrong because weight acts downwards so A is right. Q15) See the attached diagram. torque = one of the forces * p.d. between the forces The ruler...
  7. L

    AS Physics P1 MCQs Preparation Thread.

    27) For a charged particle, the force on it remains the same in the entire electric field. We can prove this mathematically: E = F/Q Since E is always constant and Q is always constant for that particle, F will be the same. Hence D. 28) When a charge is placed in an electric field the force...
  8. L

    True Or False ::::::: The Game Of Vision

    Kind of. So yeah you are right. :P The person below has no more CIE papers left.
  9. L

    AS Physics P1 MCQs Preparation Thread.

    Force = Pressure / area If the area is the same, then the force depends on the pressure. Pressure = ρgh ρ and g are constant so the pressure depends on the value of 'h'. At S and Q, 'h' is equal therefore they have the same pressure and same force. At, P and R, 'h' is more for point R...
  10. L

    AS Physics P1 MCQs Preparation Thread.

    Brittle materials can't sustain plastic deformation, they just break so B and C are wrong. Of aluminium and steel, metals usually have a lower plastic deformation while ductile materials like copper and aluminum will deform much more. So A is right.
  11. L

    AS Physics P1 MCQs Preparation Thread.

    Q is not providing a couple as they have mentioned that the lower portion of the belt provides no tension. So we calculate the moment of it instead using the upper tension (don't be confused about torque always relating to a couple, it just means turning effect). Moment of Q = force * p.d. from...
  12. L

    Physics help PLEASE!

    Yeah, sure. You see, the strings on the waves are in simple harmonic motion. In this, the speed is maximum at the centre and zero at the maximum displacement (think of it as a pendulum bob). At the furthest point from the centre, the particles have maximum acceleration. So using this...
  13. L

    Physics help PLEASE!

    F = ma We know that E = F/Q, therefore F = EQ Hence, ma = EQ a = EQ/m E is a constant, so: a = Q/m Find the charge : mass ratio for all of the options and see which one is the smallest. Charge is the proton number and mass is the nucleon number. This is the lowest for Beryllium. I hope...
  14. L

    AS Physics P1 MCQs Preparation Thread.

    I already did..
  15. L

    AS Physics P1 MCQs Preparation Thread.

    AAAA they are still tilted!! For 1) The potential at P and Q is the same (because both points experience the same electric field strength), and when 2 points have the same potential no work is done between them. Therefore the answer is A. For 2), The parallel combination is getting 1/3V and...
  16. L

    AS Physics P1 MCQs Preparation Thread.

    GUYS June 2005 has been posted in the other thread for anyone who still has doubts in that paper. http://www.xtremepapers.com/community/posts/321571
  17. L

    AS Physics P1 MCQs Preparation Thread.

    It will be zero at the centre. And maximum at the highest/lowest point. :)
  18. L

    As physics p1 MCQS YEARLY ONLY.

    June 2005 ========= Q1. C. Fact, basic stuff. Q2. C Rearrange the equation to make k the subject, so k = F/rv. = (kgms^-1)/(m * ms^-1) = kgm^-1s^-1 Q3.B A reasonable estimate for an athelete running a 100m race is approximately 10 seconds. K.E = 1/2 * 80 * 10^2 = 4000 J Q4. C Principle...
  19. L

    AS Physics P1 MCQs Preparation Thread.

    Then I was right. :p I told him you can't because the gradient is different. :p Thanks for the confirmation though. :)
  20. L

    Is anyone good with pressure/density related mcqs in AS Physics?? I need to get 3 mcqs answered?

    For question 1, the liquid pressure formula involves finding the height difference between the tubes. If you increase the RHS by 'x' metres, then the left hand side will decrease by 'x' metres and vice versa. It's sort of common sense really. If one part of the tube is going up, then the other...
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