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  1. Aries_95

    Chemistry and Physics AS paper 12 MCQS

    Q.17: See as far as i understand the question, it states that out of 100% of electrical energy, 93% is emitted as thermal, and 7% is emitted as light. since we have to calculate the efficiency as the percentage of ELECTRICAL ENERGY converted to LIGHT ENERGY, it will be: (7/100)x100=7% Correct me...
  2. Aries_95

    Chemistry and Physics AS paper 12 MCQS

    Q.29 Since power of both resistors is equal, P1=P2 V^2/Rx=V^2/Ry 12^2/Rx=6^2/Ry 12^2/6^2=Rx/Ry 4/1=Rx/Ry hence the answer is D :)
  3. Aries_95

    Chemistry and Physics AS paper 12 MCQS

    Sure :)
  4. Aries_95

    Chemistry and Physics AS paper 12 MCQS

    Yeah because I am trying to solve them myself first :P And thankyou for the compliment by the way (y)
  5. Aries_95

    Chemistry and Physics AS paper 12 MCQS

    It's ok:) I would love to help you:) See for the potential divider, we have the general formula: v=(r1/R1+R2)x E (in this case, we take it as Vo) Now, V=(R1/R1+R2)xVo therefore: (VoR1)/(R1+R2) Ie B
  6. Aries_95

    Chemistry and Physics AS paper 12 MCQS

    Q.4: Use the equation 2as=v^2-u^2 Where a=accelaeration= 0.2 ms^-2 S=distance=1km=1000, U=initial velocity= 0 ms^-1 V=? Putting the vaues in the equation, the answer is 20 ms^-1 ie A. Q.18: Pressure= 15200 Pa Density=? Height= 80 cm=80x10^-3 m g=10ms^-2 Use the eq: P= densityxgxh the answer is...
  7. Aries_95

    Chemistry and Physics AS paper 12 MCQS

    Q.25: C. Nucleophilic substitution takes place when KCN in ethanol reacts with 1-bromopropane. Br is replaced by CN. Acid hydrolysis of Nitril cause it to convert to carboxxylic acid hence producing butanoic acid.
  8. Aries_95

    AS Biology P1 MCQs Preparation Thread

    w02 question 12 then?? The questions asks for the globular shape of the enzyme. since globular shape is formed due to interactions between the R groups of the side chain giving rise to a ball shaped molecule, the globular shape is maintained by the tertiary structure (Tertiary structure...
  9. Aries_95

    AS Biology P1 MCQs Preparation Thread

    Primary, secondary and tertiary all are important to maintain shape of active site.
  10. Aries_95

    tick tock !!!!!

    Yeah...and on top of that it is Bio p-5...which is COMPLETELY unexpected at times:unsure:
  11. Aries_95

    tick tock !!!!!

    I feel nervous...:oops: Thanks by the way :) best of luck to you too(y)
  12. Aries_95

    help

    Oh...thanks for the help :) bravegirl123: sorry :(
  13. Aries_95

    help

    Sulphur burns in EXCESS of oxygen to from SO3 It says exceess of oxygen in th question :)
  14. Aries_95

    Bio P-5

    Hey all! these are notes on Chi-square test and T-test Hope these help you:)
  15. Aries_95

    Have an issue in Physics Paper 32. Center messed it up.

    Yeah probably not then :( Then i guess you'll have to go to their office.
  16. Aries_95

    Have an issue in Physics Paper 32. Center messed it up.

    There you go :) [email protected] they replied me when i contacted them through this one.
  17. Aries_95

    Physics P5 All Info You Need !!

    Hope this helps :)
  18. Aries_95

    CRO Experiment P5 Physics

    Parallel to resistors and in series with Ac. correct me if i am wrong!
  19. Aries_95

    Physics P-5

    everything :) I personally hope radiations show up :)
  20. Aries_95

    CRO Experiment P5 Physics

    CRO is used in experiments which involve determination of time period, frequency, wave display, amplitude, sound and voltage :)
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