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  1. Mustafa84922

    Thanks for the follow........... here's a follow back :P xD :D

    Thanks for the follow........... here's a follow back :P xD :D
  2. Mustafa84922

    oh yeah xD, thanks for the follow btw :D

    oh yeah xD, thanks for the follow btw :D
  3. Mustafa84922

    Sorry I have not been online since a very long time.... Anyways thanks for the compliment :)...

    Sorry I have not been online since a very long time.... Anyways thanks for the compliment :) How are you?
  4. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    ikr....XD
  5. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    You're welcome and thanks for the compliment but i myself sometimes do get stuck on questions but then again those are the question even my teacher couldn't solve xD my sir says the mark scheme is wrong but i know its not
  6. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    if it said that then it was asking you about the force that the pivot is applying, sometimes it can also be downwards if the upwards forces on the object are more than those downwards the pivot will then apply a force downwards to keep the object in equilibrium thats why if you nail something in...
  7. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    there is no need to mention anything about upward forces = downward forces because the asked about force acting ON the pivot not force EXERTED by the pivot
  8. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    here you go..... PART(D) the two masses we chose were 600g and 400g, both of them are acting downwards first we convert these to newtons, but for that they must be in kg so 600g=0.6kg and 400g=0.4kg we multiply both by 10 to get their weights (forces) 0.6kg=6N and 0.4kg=4N, so until now we have...
  9. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    Thank you and wait for the last part pls :D
  10. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    PART(C) look the first mass i chose was 600 and i placed it at the second dot which means 8 cm from the pivot so, 600*8 = 4800 the second one was 400 and it was placed at third dot therefore, 400*12= 4800 1 marks is for both the moments and one is for the fact that they are equal
  11. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    YEa sure
  12. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    yea I hope they'll be easy I wish all of us may get A* :p InshaAllah
  13. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    btw what about the other parts can you solve them???
  14. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    Part (b) when we hang both the masses we will check wether the disc rotates or not if the disc remains in its position and does not rotate to either side then the net moment is zero........ You are welcome to ask any other question :)
  15. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    2(a) is just basic stuff we have to choose two masses so that their ratio may be 12:8(3:2) 8:4(2:1) or 12:4(3:1) this is because we only have 3 holes on either side at fixed distances take whatever ratio you like, in this case 3:2 take a mass ill take 600g as it is the highest i have to place...
  16. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    sure just stay online ill take afew minutes
  17. Mustafa84922

    Is anybody worried about Chemistry paper 32 and Physics 32?

    chemistry paper 32 last 3 question were UNFAIR the bio students said they will all get a* as half of the paper was related to bio -_- anyways the mole one was pretty easy but i messed up in the one with yeast and enzymes bla bla..................
  18. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    one more thing emf is the cause and potential difference is the result, in other words potential difference is caused due to an emf.......
  19. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    Emf is the work done by any electrical source, to drive a one unit charge around a circuit Emf is a force that transfers the current throughout the circuit, and even transmits it inside the cell. It remains constant Potential difference, however, is the the amount of potential energy per unit of...
  20. Mustafa84922

    Physics, Chemistry and Biology: Post your doubts here!

    hey do you have any doubt in physics pls ask im bored and there is nothing much left for me to do thought i might be useful for others xD
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