• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. usman

    xplain PHysICs!!!!! XD

    also area under velocity/time graph gives the distance travelled by the object
  2. usman

    Chemistry (balancing chemical equations)

    Tx a lot . plz can u also give a way to tackle complex chemical equations such as this i.e. the ones is which fiddling with the coefficients doesn't yield anything. E.g. i heard about Ion-electron method but i dunno how does dat work can u plz help
  3. usman

    chemistry question

    the products of reaction of sulphur dioxide with acidified potassium dichromate: Cr2O7^-2 + 3SO2 + 2H+ --> 2Cr^3+ + 3SO4^-2 + H2O the products of reaction of sulphur dioxide with acidified potassium manganate: 2MnO4^1- +5SO2 + 2H2O --> 2Mn^2+ +5SO4^2- + 4H+ we use ACIDIFIED potassium...
  4. usman

    Chemistry (balancing chemical equations)

    Cu + HNO3 = Cu(NO3)2 + H2O + NO copper + nitric acid = copper(II) nitrate + water + nitrogen monoxide
  5. usman

    Physics

    dis question is about Topic 13 : Transverse Waves da distance b/w any 2 successive points (that r in the same phase) on a wave represents the wavelength of the wave. 4 convenience, we take the edges or the peaks as reference points 2 determine the wavelength. in the question it's given dat the...
  6. usman

    aDdditional MaThs

    thanx a lot 1ce again . m not very gud at chemistry can u plz balance dis chemical equation 4 me Cu + HNO3 = Cu(NO3)2 + H2O + NO http://www.youtube.com/watch?v=N5kkwVoAtkc How to solve tan x dy/dx + y = sec x? HELP :( d/dx (x^x^x) = x^x^x [x^(x-1) + x^x ( lnx + 1 ) lnx ] and 2^x + x = 50 x =...
  7. usman

    Additional Math

    dese are just da basics of calculus . in dis particular question u must be knowing atleast da product rule i.e. d/dx (uv) = u . dv/dx + v . du/dx & also dis simple rule d/dx [sqrt(u)] = 1/[2 . sqrt(u)] . du/dx
  8. usman

    Additional Math

    (i) let t be the time taken b4 the impact (although it's already given as 1.8s but we've 2 show dis) Now, 12j + t (15j) = (t - 0.5) 30j 12 + 15t = 30t - 15 15t = 27 t = 1.8s (shown) (ii) 46i + 1.3 (ki + 30j) = 12j + 1.8 (40i + 15j) 46i + 1.3ki +39j = 12j + 72i + 27j 1.3ki + 46i = 72i...
  9. usman

    aDdditional MaThs

    thankx a lot now can u plz do this derivation (piece of cake) 4 me also (as a cHallenGe) plz differentiate the expression in terms of x. d/dx (x^x^x) NB: x^x^x stands for x to the power of x to the power of x. :mrgreen: also plz solve dis logarithmic equation 4 me (without using graphs) and...
  10. usman

    marked script

    ok but Standard booklets are not avaiable 4m every o/a level book shop where can i get 'em 4m? can u plz help me!
  11. usman

    Mathematics (sequence & series + Logarithms)

    mathematica 7.0
  12. usman

    aDdditional MaThs

    solve da trigonometric equation sin (2X) = cos(X) plz show da steps also
  13. usman

    Mathematics (sequence & series + Logarithms)

    it is 1 + 2^(n-1)
  14. usman

    Mathematics (sequence & series + Logarithms)

    Tx man but the second one doesn't satisfy the equation
  15. usman

    Mathematics (sequence & series + Logarithms)

    plz help me out!!! find the nth term of da followin' series 4 me 3,6,11,20,37,70 & 2,3,5,9,17,33 also plz solve dis logarithmic equation 4 me (without using graphs) and find da exact value of x 2^x + x = 50 NB: 2^x stands for 2 raised to the power x
  16. usman

    Biology

    can sbd plz me out my Q is abt plant respiration. i know dat plants repire using their stomata . i also know dat these stomata are closed during night time . so HOW dO pLAnts reSpiRe durin' night time?
  17. usman

    PLZZZZ SOLVE THIS

    1st of all dis isn't exactly an algebric equation!!! . it is a expression of vectors indeed! Accordingly 10P(1-S) = 5P(1-T) & 10SQ = 30TQ 2-2S-1+T = 0 & S-3T = 0 2S-T=1 & 2S-6T = 0 Thus, T = 1/5 & S = 3/5 :ppppppppppppppp :))))))))))
View older results
Top