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  1. L

    AS Physics P1 MCQs Preparation Thread.

    They are the same thing, F is just replaced with kx in the first equation.. I think it just depends on what data is given to you, no?
  2. L

    AS Physics P1 MCQs Preparation Thread.

    Oh, sorry. I mixed this up with another question of the same type so I didn't fully read the question. Disregard that explanation I wrote. In 37, the voltmeter is connected in parallel with X and Y, and you know that in parallel to voltage is always the same, regardless of where the...
  3. L

    AS Physics P1 MCQs Preparation Thread.

    Q9) Initial m = Final m mv + 0 = 2mx (note: after the bodies stick, their masses combine. Let their combined speed be 'x'). mv = 2mx x = v/2 (m cancel out) Since the initial momentum is mv, the final momentum must be the same, so its mv also. K.E after is given by, 0.5 * (2m) * (v/2)^2...
  4. L

    AS Physics P1 MCQs Preparation Thread.

    An outer edge (i.e. X and Y) will always stretch (tension) while an inner edge (Z) will always compress (compression), so the answer is B. There was a question which utilized this concept in one of the P2 papers, but I don't remember which one it was exactly.
  5. L

    AS Physics P1 MCQs Preparation Thread.

    Q11) Momentum has to be conserved, so. Initial momentum = Final momentum Initial is 0 and at final, they move in opposite directions, so.. 0 = M1V1 - M2V2 M2V2 = M1V1 V1/V2 = M2/M1 Q36) In this, the first 10 Ohm resistor which is perpendicular from X to Y is in parallel with the 3 other...
  6. L

    AS Physics P1 MCQs Preparation Thread.

    Yeah, from O-levels. :P We didn't study it in AS level and there's a good possibility people forgot it. Good thing I have Chemistry too, because we learn a formula relating to heat capacity with that. :P
  7. L

    As physics p1 MCQS YEARLY ONLY.

    November 2005 ============= Q1. B Fact Q2. C Fact Q3. D volt = work/charge kgm^2s^-2 / As = kg ms^-2 s^-3 A^-1 Q4. B Results are said to be precise if the values are within 1 mm of their mean. Accurate is how close the values obtained are to the true value. Here, none of them are within...
  8. L

    As physics p1 MCQS YEARLY ONLY.

    I'm in the middle of doing November 2005. Should be done within 30 minutes, InshaAllah. Check the first page to see what papers are done.
  9. L

    AS Physics P1 MCQs Preparation Thread.

    The correct method would be that, (to my knowledge), all of the outer edge forces (X+Y) get stretched (tension) while the inner edge forces (Z) get compressed (compression).
  10. L

    AS Physics P1 MCQs Preparation Thread.

    OK please post the questions again or link me to your old post, I don't want to dig deep down to find it. :\
  11. L

    AS Physics P1 MCQs Preparation Thread.

    I have to go somewhere, but when I'll be back I'll try to answer all of your questions. Don't worry dude there's still like 5 days left. :)
  12. L

    AS Physics P1 MCQs Preparation Thread.

    You know that the weight is in the middle of the rod. If you assume the length of the rod to be 1.0 m, and take the wall as the pivot, then you can form an equation: 10.0 * 0.5 = F sin 30 * 1 F = 10.0 N
  13. L

    AS Physics P1 MCQs Preparation Thread.

    The copper wires are in parallel with the steel wire. Total resistance of the parallel series: [6(1/10) + 1/100]^-1 = 1.64 Ohm ~ 1.6 Ohm.
  14. L

    AS Physics P1 MCQs Preparation Thread.

    Could anyone answer the question in the attached image? The answer is A but I don't get it.
  15. L

    AS Physics P1 MCQs Preparation Thread.

    If you have the papers, please post them. Maybe we could discuss the answers. :)
  16. L

    AS Physics P1 MCQs Preparation Thread.

    10 ms = 10^-3 = 0.001s.
  17. L

    AS Physics P1 MCQs Preparation Thread.

    If the line was fully straight the velocity would be zero because the gradient would be zero.
  18. L

    AS Physics P1 MCQs Preparation Thread.

    If you put height at the y-axis and time at the x-axis, then the velocity will be its gradient (height/time). Since the gradient is constant, this means the velocity is constant which is correct.
  19. L

    AS Physics P1 MCQs Preparation Thread.

    If you increase the resistance of the variable resistor, the current decreases. When the current decreases, the p.d. across XY will decrease. Therefore, to balance the galvanometer you need more of the p.d. that is present in the lower circuit, so you shift the contact towards Y.
  20. L

    AS Physics P1 MCQs Preparation Thread.

    Yes.
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