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  1. H

    Physics Help needed

    well math angle u might be interested in smthing critical abt significant figures: Suppose that we are asked to measure the area of a computer disk label using a meter stick as a measuring instrument. Let us assume that the accuracy to which we can measure with this stick is 0.1 cm. If the...
  2. H

    Physics Help needed

    lets say u hav a set of data for t(s) i.e time. there r six readings.to calculate the precision ;u ll first calculate the mean value.if the deviations from the mean value are very small,then ur data is precise but if deviations are large ur data is not precise. Now lets examine the link of...
  3. H

    bond energetics

    why energy is released when a bond is formed ???
  4. H

    INTERNAL energy...?

    free state means that there are no intermolecular attraction forces btw molecules ???
  5. H

    INTERNAL energy...?

    plx anybody tell me wats the internal energy.....nd wat does potential enrgy means at molecular level? nd wat ll happen to internal energy of water if some water evaporates at constant temp.?
  6. H

    Biology Help-->Genetic Control!

    well below is a part of text from a book...b4 dat guyx.....purines(double-ringed) are adenine and guanine Because the AT and GC pairs are of equal length and fit identically into the double helix (like rungs on a ladder), the diameter of the helix is uniform. The base pairs are flat (see Figure...
  7. H

    Biology Help needed--->Enzymes!

  8. H

    Biology help needed!

    temp. coefficient in wich chapter...?
  9. H

    enzyme inhibition

    excuse me....i think decrease in end product comparative to substrate for the first enzyme in metabolic pathway will render the inhibition useless.....isn't it?
  10. H

    enzyme inhibition

    What is the advantage of end product inhibitors being non-competitive, rather than competitive?
  11. H

    HAPPY EID!

    EID-MUBARAK 2 ALL
  12. H

    Mangnesium oxide soluBility...?

    oohh thnx guyx....
  13. H

    Mangnesium oxide soluBility...?

    why MgO is insoluble in water whereas NaCl is?
  14. H

    AS level Chemitsry

    http://www.chemguide.co.uk/CIE/index.html go here it contains perfect notes...trUst me!!!
  15. H

    chemistry help......

    thnx queeeeeeeeeeeen...
  16. H

    chemistry help......

    Energy is released whenever a covalent bond is formed. Because energy is being lost from the system, it becomes more stable after every covalent bond is made. cn anybody help me in understanding this sentence.... i mean why loss of energy makes the system more stable
  17. H

    apparent weight.....???

    wats apparent weight ? state two situations in which apparent weight of an object myt change?
  18. H

    Biology Help needed!!

    guyx how do u found dna replication translation topic....i found it amazing
  19. H

    NOV 2010 GRADE THRESHHOLDS

    yar how many times shud we tell that percentile is there.........
  20. H

    places u'd really love to visit

    iw ould like to go to switzerland...i wud love to attend the openning ceremony of olympics 2012
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