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  1. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Method is correct, dk the values coz i didn't bother calculating ! :P
  2. asd

    Biology; Chemistry; Physics: Post your doubts here!

    In A the current can flow as long as the battery connections are reversed. You see the Pointed part of the diode indicates the direction where it allows the current to flow. So if you reverse the connections to the battery, the current will not flow, because then the pointed part of the diode...
  3. asd

    Biology; Chemistry; Physics: Post your doubts here!

    -__-"
  4. asd

    Biology; Chemistry; Physics: Post your doubts here!

    A?
  5. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Lmao, did someone tag you with that mnemonic ?
  6. asd

    Biology; Chemistry; Physics: Post your doubts here!

    For the left iron bar: One end is north (which points towards the South pole of the magnet) and the other is S-pole (that points towards the North pole of the magnet) For the right iron bar: Conclude yourself, want to see if you understand. Hint: Induced magnetism always induce an opposite pole...
  7. asd

    Biology; Chemistry; Physics: Post your doubts here!

    If your face is in line with your finger then yes. Bottom of the page is simply BACKWARDS.
  8. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Left hand rule. If the question states that magnetic field is out of the page/into the page, you'll have to give you answer with respect to top/bottom of the page. For protons (carrying positive charge) the direction of the current will be the same as shown. For eg: Field is into the page...
  9. asd

    Physics O-levels post doubts plz

    That was helping. But, no microwaves ! :D :ROFLMAO: And, no transformers too :( Still, a nice summary of most of the chapters!
  10. asd

    Biology; Chemistry; Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20O%20Level/Physics%20(5054)/5054_s09_qp_2.pdf Look at the question no 7 part c. It is normally used along with a coil. Now, thermistor attached to the second circuit actually reduces the resistance in the circuit when there is a...
  11. asd

    Biology; Chemistry; Physics: Post your doubts here!

    attach a thermistor for temperature and LDR for light.
  12. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Correct, you both -_-
  13. asd

    Biology; Chemistry; Physics: Post your doubts here!

    It's D, as Spidey said. Well I'd love to see Spidey explain that too. Spidey21 :D :P :)
  14. asd

    how were bio papers?

    So, mine is correcT? It just showed continuous variation right? since there were extremes and intermediates in the height trend !
  15. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Yes in Kg. And size of the bore as in with respect to length or diameter? Well, if more length, there is more range, so less sensitivity ( range and sensitivity are inversely proportional). And if bore is thin (less diameter) the thermometer will be more sensitive.
  16. asd

    how were bio papers?

    Don't you tell me that... :cry: I expected 40/40 ....:(
  17. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Hmm.. yea.
  18. asd

    Biology; Chemistry; Physics: Post your doubts here!

    It sure is D. See the car is moving to the left, so the tyre must be moving in the opposite direction. See yourself. therefore friction must act in D.
  19. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Dude see. For 1kg of water at 25 *C to reach 40*C, it would need = (1)(15+273)(4200) J of energy = 1209600 J For 500g of beaker to reach 40*C, it would need = (o.5)(15+273)(5615) J of energy = 808704 J So their total is 808704 + 1209600 = 2018304 J So for This much energy to be given out by...
  20. asd

    Biology; Chemistry; Physics: Post your doubts here!

    No :) :P
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