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  1. shahzaib ihsan

    Physics: Post your doubts here!

    np i get it now... so time period of the wave is 30 small boxes phase difference = (360/timeperiod)x timeinterval difference, so: 60=(360/30) x time interval difference , so (60x30)/360 = time interval difference = 5, which means 5 small boxes ahead of it.
  2. shahzaib ihsan

    Physics: Post your doubts here!

    in b1, how to know how many small squares ahead we have to plot? i seem to have forgotten the formula/method...
  3. shahzaib ihsan

    Physics: Post your doubts here!

    If you see the upper part of question, (a), it states that mass is in equilibrium when the displacement of mass=0 . that means at 0 displacement, the weight is equal to the force created by the spring. Now at t=0, the mass has been released, the time t=0 represents the start of motion of the...
  4. shahzaib ihsan

    as papers incoming.. i hope i get those As needed to make me a doctor..

    as papers incoming.. i hope i get those As needed to make me a doctor..
  5. shahzaib ihsan

    Physics: Post your doubts here!

    hmm , i get confused too, but the thing i have noticed there are 3 key words: define, state and explain. state and explain you have to write qualitatively but in define there can be some options. Like if they say define work done, then you can write forcex distance travelled in direction of...
  6. shahzaib ihsan

    Physics: Post your doubts here!

    for the second question : if the separation of the slits is increased... the question asks to state the appearance of fringes so you must include brightness of fringe and the fringe separation to score marks... Brightness doesn't depend on slit separation, but on slit width. So to score two...
  7. shahzaib ihsan

    Physics: Post your doubts here!

    Just found the answer: -ma = mg - R m= mass (95kg), R = resistive force(in this case frictional force), g= gravity (acceleration due to free fall {9.81}) so up the slope is negative direction, so resultant force is negative (ma) and r is also up the force so it is also negative. mg(weight) is...
  8. shahzaib ihsan

    Physics: Post your doubts here!

    Hello, i have doubt in the question of june 2016 physics varient 22 (aslevels) in Q1 (b) (v) http://www.teachifyme.com/wp-content/uploads/2016/08/9702_s16_qp_22.pdf Calculate the frictional force... i can't understand the markscheme with the directions/components so if anyone can do a full...
  9. shahzaib ihsan

    CIE Pakistan studies all section 3 questions?

    Thank you very much
  10. shahzaib ihsan

    In the final year of O'lvls in Faisalabad, Pakistan

    In the final year of O'lvls in Faisalabad, Pakistan
  11. shahzaib ihsan

    CIE Pakistan studies all section 3 questions?

    Guys i m having difficulty gathering questions about the section 3 of Pak studies. (history of Pakistan) Can u guys please give a list of questions asked regarding to the 3rd section (don't remember the name) in past papers with marks scheme/solutions? Help will be appreciated. Thankyou
  12. shahzaib ihsan

    guide a new comer .......

    hi i am shahzaib ihsan from class 9 0 . i m studying in dmc ( DIVISIONAL MODEL COLLEGE) faisalabad. there is an easy question but it seems i can't solve it plz can anyone help me? it is of mathematics, d3 , ch4 . ex 4a q3. i solved it 2 months ago but now i m again stuck at it
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