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  1. Yousuf Ykr

    A level Computing: Post your doubts here

    This site is not working for me... Is the site down. if so then can anyone give me p3 notes that have been downloaded beforehand?
  2. Yousuf Ykr

    Biology practical on Thursday

    Can anyone tell the lebel of P Q R and the difference between the slide and the image?
  3. Yousuf Ykr

    Chemistry practical 34 oct/nov important

    In the mar In the mark scheme, the exact word written is "per second"..... But no where is written S^-1. The difference between bot of them is that, the unit would still be per second if you multiply a constant. ( like you said constant does not have any unit) but at the end you do have to give...
  4. Yousuf Ykr

    Chemistry practical 34 oct/nov important

    It was also oxidised by potassium di chromate and had a sweet smell. So, it cannot be carbo xylic acid as it is not possible to oxidise Carboxylic acid (unless it is KMno3). So would it be SO2?
  5. Yousuf Ykr

    Chemistry practical 34 oct/nov important

    Well, multiply or diving by a constant sometimes change the unit. For example, you can change the unit 1cm by multiplying with 10 and this would turn into 10mm. In our case, we dont know what unit we are getting. thats why we have to write the full form i.e s^-1*1000. If anyone doubts me or have...
  6. Yousuf Ykr

    Chemistry practical 34 oct/nov important

    Thanx zahra for that. Btw what was your last gas test? the one with the sweet smell
  7. Yousuf Ykr

    Chemistry practical 34 oct/nov important

    Units are sometime dealt with constant. For example I can write 1m as (1*1000mm)
  8. Yousuf Ykr

    Chemistry practical 34 oct/nov important

    Btw, can anyone tell me all the cation and anion present properly. Because I did not get any sulphite. I got all of them sulphate
  9. Yousuf Ykr

    Chemistry practical 34 oct/nov important

    It will not be s^-1. It would be s^-1*10^3..... This question came in 2003... check there.
  10. Yousuf Ykr

    Essay checking

    Thank you so much.... It really helps
  11. Yousuf Ykr

    Essay checking

    Assalamwalaikum Thank you very much for the review. Hopefully I will try to fix that in the future. But I noticed that it is sometimes hard to go exactly by the topic and more over we dont get that much time to plan all of it beforehand. So any suggestion for that?
  12. Yousuf Ykr

    Essay checking

    Here is my essay.... If any one can help?
  13. Yousuf Ykr

    Essay checking

    It is very hard to mark yourself in SAT especially for essay. So I make this thread so that ppl can post essay and others might rate the essay....
  14. Yousuf Ykr

    As physics p1 MCQS YEARLY ONLY.

    Can you tell mw, why you have to half the wavelength of the open ended tube compare with the first close ended tube?
  15. Yousuf Ykr

    Physics paper 1 AS level doubts here!!!

    Any one can solve May June 2011 12, question 8 and 15
  16. Yousuf Ykr

    Physics practical tips

    hope it helps http://www.amazingedu.com/
  17. Yousuf Ykr

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

    The third question was pretty hard... Am just crying for that. Can anyone tell the result
  18. Yousuf Ykr

    As Biology p22 Discussion !! Any doubts, predictions.....

    I hope we can discuss about our exam here... But We could talk about our exam after five hours posting this as that would be the time most of us might finish the exam... Until then if anyone has any doubt or prediction, they can post them..I can try to solve the doubts
  19. Yousuf Ykr

    Physics: Post your doubts here!

    The red wave represent the phase after 0.25T....Since it is 0.25, it means that the two graph has a phase difference of 1/4 since 1/4= 0.25 It means that the next graph would be one fourth ahead.... And what is the one fourth of 80? It would be 20....so the new graph would complete one complete...
  20. Yousuf Ykr

    Physics: Post your doubts here!

    The red wave represent the phase after 0.25T....Since it is 0.25, it means that the two graph has a phase difference of 1/4 since 1/4= 0.25 It means that the next graph would be one fourth ahead.... And what is the one fourth of 80? It would be 20....so the new graph would complete one complete...
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