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  1. Jaf

    AS Biology P1 MCQs Preparation Thread

    Dude, atleast take the picture right. -_- It's tilted and not even complete.
  2. Jaf

    AS Physics P1 MCQs Preparation Thread.

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w04_qp_1.pdf First find the combined resistances of each of the two sets of parallel resistors. It's 2Ω and 1Ω respectively. Since the combined resistance of the first set of parallel resistors...
  3. Jaf

    AS Physics P1 MCQs Preparation Thread.

    Dude, say what you've written out loud and tell me if it makes sense to you. It doesn't, to me. The following is my explanation: So p₀ is the pressure inside the straw including where it is touching the liquid. Now, since the kid is only able to produce a pressure difference of 0.1p₀, we need...
  4. Jaf

    AS Physics P1 MCQs Preparation Thread.

    You're misreading the question. The question says: "[...]the child is capable of lowering the pressure at the top of the straw by 10%. [...]" This means that the pressure on top is 0.9p₀. What's the argument now? :p
  5. Jaf

    AS Physics P1 MCQs Preparation Thread.

    From rest?
  6. Jaf

    AS Physics P1 MCQs Preparation Thread.

    13 - C Condition for a couple is that the 2 forces should be equal and acting in opposite, parallel directions. 15 - A You need to compare the lengths here and see which forces produce a closed triangle. 17 - D Since the speed remains the same, the KE remains the same. Change in KE is...
  7. Jaf

    AS Physics P1 MCQs Preparation Thread.

    B. Consider the momentum of the sand+car as a whole. Also, consider Newton's first law with regard to the car. There's no accelerating force acting on the car at Y so it can not gain speed.
  8. Jaf

    People who have given SAT's..

    Whaaat? :O He got admitted without an undergrad degree?
  9. Jaf

    AS Physics P1 MCQs Preparation Thread.

    You mad bro? Time for some rest. :cool:
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