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Recent content by Sana101

  1. S

    How was physics paper 51!

    I think my expressions for the gradient and y-intercept are wrong. Will all my other values calculated be wrong or is it error carried forward? :/
  2. S

    Are you discussing the paper?

    Are you discussing the paper?
    • Sana101
    • Profile post
  3. S

    Chemistry: Post your doubts here!

    Paper 5 May June 10 52 Can someone please tell me how to make the molal solutions. Question 1 part d) http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s10_qp_52.pdf
  4. S

    AS Physics P1 MCQs Preparation Thread.

    a) first find the wavelength = speed/frequency = 340/500 = 0.68m Formula for path difference (you need to know this) = 2(pie) x path difference (which is 0.17 in this case) / wavelength(0.68) = 2(pie) x 0.17 / 0.68 = 1/2(pie)
  5. S

    AS Physics P1 MCQs Preparation Thread.

    a) First off, bear in mind that since the 'same braking force' is used the acceleration is remaining constant. therefore first find the acc. v^2 = 2as 10^2 = 2 x a x 10 a = 100/20=5 Now find the 's' 30^2 = 2 x 5 x 's' s = 900/10 = 90 m
  6. S

    Physics paper 1 AS level doubts here!!!

    aright thanks! :)
  7. S

    Physics paper 1 AS level doubts here!!!

    how do we know if for the components we have to use 30 or 60?
  8. S

    Physics paper 1 AS level doubts here!!!

    Can someone please help me with Q 16 AND 17! Both answers are C! :( http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_12.pdf
  9. S

    AS Physics P1 MCQs Preparation Thread.

    8- find individual speeds 40/12= 3.3 40/6=6.6 Average time = 12+6/2 = 9 Acceleration = 6.6-3.3/9 = 0.37 25- one open end = f two open ends = 2f 27- substitute random values of 'a' and 'D' such that lambda = 600 double your choosen values. and then calculate 'x'
  10. S

    AS Physics P1 MCQs Preparation Thread.

    Please help Q) 14 15 19 http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_11.pdf
  11. S

    AS Physics P1 MCQs Preparation Thread.

    Can someone please help me with Q 16 AND 17! Both answers are C! :( http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20%289702%29/9702_s11_qp_12.pdf
  12. S

    AS Physics P1 MCQs Preparation Thread.

    for potentiometers when the R decreases V decreases.
  13. S

    AS Physics P1 MCQs Preparation Thread.

    When the light intensity is increased the resistance of the LDR decreases. this mean voltage across the LDR decreases as well. Since the highest voltmeter reading across it is 4, common sense would say the answer should be anything below 4 once resistance decreases!
  14. S

    Current : Is it a vector or a scalar quantity?

    Current is a scalar quantity. The only vector quantities we study of are - Displacement, velocity, acceleration, momentum, moments, force (weight), and electric field strength.
  15. S

    Physics paper 1 AS level doubts here!!!

    http://www.xtremepapers.com/papers/...nd AS Level/Physics (9702)/9702_s11_qp_12.pdf Q 16 AND 17! Thanks..
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