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  1. S

    Chemistry P4| A2 only

    Does anyone have a summary of everything we need to know for analytical chem? IF so please do post, thank you
  2. S

    Chemistry: Post your doubts here!

    Does anyone have a summary of everything we need to know for analytical chem? IF so please do post, thank you
  3. S

    Chemistry: Post your doubts here!

    Reaction kinetics: are these the only equations:? Rate= k x conc. rate = change in conc./ change in time ????? or is there anything im missing cuz it feels like it when i answer the papers and the MS don't really help me out much with this either. Thank you
  4. S

    Chemistry P4| A2 only

    Reaction kinetics: are these the only equations:? Rate= k x conc. rate = change in conc./ change in time ????? or is there anything im missing cuz it feels like it when i answer the papers and the MS don't really help me out much with this either. Thank you
  5. S

    Chemo P5 tips

    independant variable is what we change in the experiment and is on the X axis. The dependant variable is what is affected when we change the independant variable
  6. S

    Chemo P5 tips

    is it possible that chromatography may come?
  7. S

    Chemistry: Post your doubts here!

    Please help me http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s08_qp_2.pdf question 3, d, i. I have no idea how the answer is supposed to be to the RHS.
  8. S

    dude gimmi your number

    dude gimmi your number
    • shamil
    • Profile post
  9. S

    Physics: Post your doubts here!

    i need help answering questions about diffraction. how will the brightness and fringe width be changed by changing the slit seperation? Please help
  10. S

    DC /AC Motor

    Dc motors have a split ring commutator which changes the direction of current in the coil every half turn and so twice every turn. it reverses the direction of current and so keeps the coil rotating in one direction. when the coil is horizontal it has max. leverage and when it comes to vertical...
  11. S

    ATP PHYSICS I M GOIN MAD!!!

    polarities are the terminals on the battery the anode and the cathode and they bust be correctly positioned. In the case of voltmeters and ammeters there are _ valueson their scales this means that the polarity has been reversed. The red terminal on the voltmeter or ammeter means that the...
  12. S

    ATP PHYSICS I M GOIN MAD!!!

    In gce o levels remember that when we have to come to a conclusion they generally mean " if ( some value) increases (the other value) increases (or decreases) It is also advisable to use proportionaltity. example if you feel i is proportional to r then i=k (constant) r. divide i by k and you...
  13. S

    ATP PHYSICS I M GOIN MAD!!!

    When you use a translucent screen the image formed on it can be viewed from the back of the screen as well so there will be no obstruction of light when viewing the image
  14. S

    ATP PHYSICS I M GOIN MAD!!!

    The fidicial mark is the mark at the mean of the object. simply said it is the mid point of the object when it is suspended and not moving at all. The fiducial mark is vital for recording oscillation times. We know for a fact that the time for one oscilation is too small to be calculated by just...
  15. S

    ATP PHYSICS I M GOIN MAD!!!

    have you understood so far?
  16. S

    ATP PHYSICS I M GOIN MAD!!!

    In the second question is it word play. Paralell means along with the object, on either side of the object or a distance away from the object as long as it is equally angled. An example will be your fingers. If you place your fingers together then thay are paralell. Perpendicular means forming a...
  17. S

    ATP PHYSICS I M GOIN MAD!!!

    You have obviously used a set square and you know that there is a right angle formed between the sides of it. What is its purpose in these experiments? They are used to allign the ruler to get the correct reading. By align i mean paralell to the bob/ ball. So here's the deal, take the set square...
  18. S

    ATP PHYSICS I M GOIN MAD!!!

    ok i'll hepl you
  19. S

    HOMEOSTASIS (BIOLOGY)

    Basically the kidney has two major function is relation to homeostasis: 1. Osmoregulation 2. Salt concentration balance. As you might already know osmo regulation is the balance of water concentration in the body. this is extremely important as if there is too little water in the blood the...
  20. S

    physics

    remember it should be free so that there is no friction between the thread and the hoder, thus it will on its own come to settle with the centre of gravity lying just behind it. then another point is used nd this line is intercepted and this interception is known as the centre of mass. The eye...
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