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Recent content by Mayarzawaydeh

  1. Mayarzawaydeh

    Physics: Post your doubts here!

    hey!! can someone please help me in this question? the question says: a fixed mass of an ideal gas undergoes cycle PQRP of changes as shown in fig.1 b(I) state the change in the internal energy of the gas during one complete cycle PQRP b(ii) calculate the work done on the gas during the change...
  2. Mayarzawaydeh

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s09_qp_4.pdf can someone help me out in question 12 part c?? please its urgent! thanks in advance!:)
  3. Mayarzawaydeh

    Physics: Post your doubts here!

    thanks!!
  4. Mayarzawaydeh

    Physics: Post your doubts here!

    hey does anyone know on what bases do we get our candidate numbers? I mean where does the count start from ( if that makes sense hahah)
  5. Mayarzawaydeh

    Physics: Post your doubts here!

    does anyone know where I can find winter 2015 papers for cie physics 9702 ?
  6. Mayarzawaydeh

    Physics: Post your doubts here!

    can somone pleassseeee help me in this question?? this paper is summer 2011 paper 52 question 2 the question says that it is suggested that V and R are related by the equation V = F E /R + E Where F is the resistance of the fixed resistor in the circuit and E is the e.m.f of the cell a graph...
  7. Mayarzawaydeh

    Chemistry: Post your doubts here!

    the Answer is D. possible isomers are: 1. CH2=CHCH2CH2CH3 2. CH3CH=CHCH2CH3 <--- the cis isomer. 3. CH(CH3)=CH(C2H5) <--- the trans isomer. 4. CH2=C(C2H5)CH3 5. CH2=C(CH3)CH2CH3 6. CH3C(CH3)=CHCH3
  8. Mayarzawaydeh

    actually I don't take biology but one of my friends has this doubt. Thank you so much for the...

    actually I don't take biology but one of my friends has this doubt. Thank you so much for the help, you're awesome!
  9. Mayarzawaydeh

    Thank you. not yet confirmed too but I think most probably engineering :)

    Thank you. not yet confirmed too but I think most probably engineering :)
  10. Mayarzawaydeh

    wow good luck to you!! and what are you planning to study later on?

    wow good luck to you!! and what are you planning to study later on?
  11. Mayarzawaydeh

    yup mathematics, physics and chemistry. what about you?

    yup mathematics, physics and chemistry. what about you?
  12. Mayarzawaydeh

    welcome!

    welcome!
  13. Mayarzawaydeh

    A level Biology: Post your doubts here!

    hi. can someone please explain as to why the answer is A?
  14. Mayarzawaydeh

    Physics: Post your doubts here!

    Because if you chose to start counting from the right end of the emitted pulse, you should stop your count also at the right end of the reflected pulse, which again makes it 4 blocks. I think you must have got confused counting from the end, so to avoid this problem I suggest you start your...
  15. Mayarzawaydeh

    Chemistry: Post your doubts here!

    I assume this is a simple concept. To know whether an atom donates a pair of electrons or shares them to expand it's octet, you have to think about each atom and how many electrons it requires to complete it's octet. the atom that donates it's pair of electrons has to have at least one pair of...
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