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  1. D

    Chemistry Paper 52.. How was it?

    MR was 90 . Compound was hydroxy propanoic acid
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    Maths P3 2015 All Questions And Answers.

    Answer to question 3 seems wrong it was a decimal number which you had to write to 3SF
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    physics paper 42 expected gt and discussion

    Copper
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    physics paper 42 expected gt and discussion

    Lol obviously i did. But i guess but im dead sure i considered efficiency.
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    physics paper 42 expected gt and discussion

    how did you calculate the decay constant?
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    physics paper 42 expected gt and discussion

    Took efficiency into account . dead sure it was 130g. When you used the answer we previously calculated for number of alpha particles per second we use that as Activity. and when we use that as activity efficiency was considered. Use formula A=TN and then etc.
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    physics paper 42 expected gt and discussion

    Oh most of his weight is converted to centripetal force to make him go in a orbit around the earth and very small forces holds him to the surface
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    physics paper 42 expected gt and discussion

    Wasnt it the other way round? the fraction?
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    physics paper 42 expected gt and discussion

    Amplitude was 3 and 1.7?
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    physics paper 42 expected gt and discussion

    oh my bad i was referring to the Xray Photon and electron one. what was the astronaut again?
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    physics paper 42 expected gt and discussion

    There must have been a third particle involved or released in the collison.
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    How was Mathematics Paper 32 2015

    Its hard to predict. People who got it right will even say it to be above 70 people who got most wrong will say around 45 etc. Expect it to be in 55-65 range
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    How was Mathematics Paper 32 2015

    In may June 14 was around 54-55 dont remember exact
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    How was Mathematics Paper 32 2015

    Lowest is around 52 and highest at 67
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    physics paper 42 expected gt and discussion

    i did the same thing you did but i subsituted V=WXo. where Omega is angular frequency and Xo is peak amplitude. Found ratios using that since the aplitude was visible on the graph. And W is same for both so gets cancelled. But your answer is close to the flipped fraction. So one of us probably...
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    physics paper 42 expected gt and discussion

    calcualting KE was easy the formula is 1xMx(XoW)^2 . so everything gets cancelled but the amplitude. you just square the amplitudes and take the ratio and im sure it was right. Had nothing to do with gradient
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    How was Mathematics Paper 32 2015

    EDITED: to help stop discussion
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    How was Mathematics Paper 32 2015

    I know page 2 was very confusing. The differential equations required alot of working just for 2 marks. Integration had me thinking too but i managed get it right on in the end.
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    physics paper 42 expected gt and discussion

    Mass was 130g. and KE ratio was around 0.32
  20. D

    How was Mathematics Paper 32 2015

    Guess was normal . Not too hard, not too easy. had to leave a 2 mark part cause didn't manage time well.
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