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  1. good man12

    AS Physics P1 MCQs Preparation Thread.

    sure. in the last one about wire.................you knoe that resistence is directly proportional to length and inversely proportional to CSA, hence, since the lenth is same, but you have N number of wires, each has area of AREA/N..hence resistance of individual wores increases, but since...
  2. good man12

    further mathematics in A level!

    GO FOR IT>...................good luck.......even if you come out with a C grade or higher its really worth IT...esp when u apply to unis.....its like a very convincing weapon.
  3. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    no need to brag about A*.....they proove nothing........i know many students who just put in 2 weeks before the exam and come out with straight A* in O and A levels.........but when u ask them a conceptual question...THEY FREAK OUT!!!!!!!!!!!any how i accept my mistake about the power out put as...
  4. good man12

    further mathematics in A level!

    i dont mean to be harsh, but me after getting an A* in math in o level, and self studying 4 or 6 chaps in add maths but not appearing, i appeared for P1 and M1 this session. they mashallah went well, and now i just started P3......im honestly telling you i already completed first five chapters...
  5. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    well i checked from many places on net............: the output power of a car engine doesnt refer to its useful power output, but it includes any heat , sound, and mechanical output, so im confident that my answer is correct, but i cant suppose the converse argument is wrong if you mentioned...
  6. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    i dont wanna start another argument, but isnt out put power, the work done usefully/s + work done against r/s......consider the example: a motor lifts a 5kg mass by 5 metere , the mass has Kinetic energy of 15J at top starting from rest. work done against resistence is 20J...then as i know...
  7. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    THIS IS THE BEST CONCEPTUAL EXPLANATION WHICH CAN BE GIVEN FOR 500HZ QUESTION..... i hope it shuts doors for all controversies.........well it better. CONSIDER THE IMAGE. .
  8. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    im certain it was extension on x axis...............got d photographic memory
  9. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    i think 2 for kinetic en, and 3 for mgh as we had to calc final height also
  10. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    my P.E was mgh= (0.050)(9.81)(5.0-0.9)=2.011= which i wrote as 2.0 as the data had a min of 2 sig fig..
  11. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    T was : 1568 which i wrote as 1570.........
  12. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    total output power is just work done/time taken....not useful work done/time taken.............i say my car has a 20Kilo Watt powered engine, in order to calculate top speed i have to subtract power against resistence first.......it isnt included as you assume...any how..gain in pe was less as...
  13. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    well i wrote that the change in gpe is grater then change in KE which suggests that some energy is lost during the balls collision with the ground...
  14. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    dont worry, its fine, but u should have rounded to 3 sig fig as in all the data there were 3... Any body very sound in math would know that in place of w/t you could substitute it in to X and solve the eqation....now no need for inverse.....mine was 0.00104+-0.00009 ( which is confirmed correct)
  15. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    you are correct...dont worry, no need to take inverse, you are just dividing by 1.2 * 10^-6 on other side.....so take into account the simple uncertainti +-0.01.....no need for minus sign
  16. good man12

    HOW WAS PHYSICS PAPER 2 AS!!!!!!!!!!!

    hahahahah..............wrong..!!!!! lambda was obviously 68 cm...convert to metres.......= .68m....the 340/0.68....= 500Hz.....simple as that........if any one got answerlike 1000 means he took lamba has 38 which was wrong and the trick in the ques which apparently will loose 2 marks out of 3
  17. good man12

    GT for Chemistry paper 22 AS.

    no i have the photographic memory....Q31, Q32, Q33...were on same page, the Q34 was top of next page it was the ammonia behaves with silver chloride...and 32 was actually repeated from 2003 i think.
  18. good man12

    GT for Chemistry paper 22 AS.

    yeh.....i ca bet that....the options are probably mixed up in out minds..................
  19. good man12

    How was your biology paper 22? I am so sad and devastated.

    FYI....gt was only 50 in bio once...and that paper was 1000x easier then p22 we did.........trust me....there arent so many geniuses out there who are gonna drag the gt to 52 or 53..........it will be at most 48,
  20. good man12

    PHYSICS P22: How was it?

    discuss after 24 hrs......u can search on net..google it
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