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    (Original post by Bulbasaur10)
    Yes. That's what I thought, but was M closer to the lens than the original point or not..... ? I am so worried!
    The question asked you to compare positions N and M, so you had to describe the nature of both, right? I did both just to be safe
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    'What is meant by a moment of force?'
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    (Original post by dianmian12)
    There was the question on the foot pedal and drums. You had to find out the force of the chain from the foot pedal (3 marks)
    It said there was a 1.5 N force from toe I think. 0.20 from pivot to the chain. 0.12 from pivot to toe.
    What did you all get for the answer?
    I got 0.9N
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    (Original post by dianmian12)
    'What is meant by a moment of force?'
    I put a resultant force of a circular movement
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    I got 0.9N as well
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    Very last question on lens -
    Draw lens c, it gave you lens B.
    Did you draw lens c thinner?
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    (Original post by Ayesha_Narod)
    The question asked you to compare positions N and M, so you had to describe the nature of both, right? I did both just to be safe
    Oh! I might actually have a chance of getting the marks now. AQA are mean so I probably won't but it doesn't matter too much. I kinda just said 'when the object is closer e.g. at L/M....., blah blah happens to the image!' Maybe it will be enough!
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    'Why is X-rays not used with unborn babies?' (3)

    X-ray causes ionisation (1) which are damaging to the foetus' cells, causing them to become mutant and divide uncontrollably. (1) This leads to cancer. (1)

    This question also came up in the 2013 paper, which I took last night. But that time they gave you 2 marks, whereas this year's paper gave you 3 marks for the same question...
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    (Original post by dianmian12)
    There was the question on the foot pedal and drums. You had to find out the force of the chain from the foot pedal (3 marks)
    It said there was a 1.5 N force from toe I think. 0.20 from pivot to the chain. 0.12 from pivot to toe.
    What did you all get for the answer?
    sounds like a moments question, if you could be more precise on what the question was i could calc it, was it something like


    ..........< 0.12m> ............<0.20m>
    (1.5N)-----------(pivot)-----------------(Force Xn)


    anything like that? if so just do 1.5*0.12=0.2*X so X=1.5*0.12/0.2 =0.9 N

    but hey i dont know what the exact question was cos i didn't sit this paper, this was just a guess at what the question might be?
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    (Original post by YAY GCSE)
    I put a resultant force of a circular movement
    Moment: force* perpendicular distance from pivot
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    (Original post by Sam1999__)
    Agreed OP that was possibly the most horrible physics paper I have ever seen.... They added lots of little traps and tricks into the calculation questions and there were so many graphs, it was definitely less linear than the other physics past papers i did which i got As and A*s on all round. Questions were worth the same sort of marks that they were in past papers but in this paper there seemed to be more steps to the answer and everything just seemed more confusing. My only hope now is low grade boundaries because everyone in my school found it hard and seeing this is nice in a way because i know other people found it especially hard as well
    lol peak, it wasn't as hard as you are making out; if you slept well and revised there's no excuse to get below 51-54, hence the grade bounadries will remain i think at 44 or 46
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    (Original post by dianmian12)
    Very last question on lens -
    Draw lens c, it gave you lens B.
    Did you draw lens c thinner?
    I drew it thicker. I don't really know, but my line of thought was that since it had a shorter focal length, it had to be more powerful, and as it had the same refractive index as lens b (made of the same glass), it had to be thicker to converge the rays more.

    May be I totally misread it....
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    (Original post by dianmian12)
    There was the question on the foot pedal and drums. You had to find out the force of the chain from the foot pedal (3 marks)
    It said there was a 1.5 N force from toe I think. 0.20 from pivot to the chain. 0.12 from pivot to toe.
    What did you all get for the answer?
    I got 0.9 N
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    (Original post by dianmian12)
    Very last question on lens -
    Draw lens c, it gave you lens B.
    Did you draw lens c thinner?
    No- it's fatter
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    (Original post by TSRPAV)
    Moment: force* perpendicular distance from pivot
    It said to define moment not how do you work out moment
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    (Original post by 1jonam16)
    lol peak, it wasn't as hard as you are making out; if you slept well and revised there's no excuse to get below 51-54, hence the grade bounadries will remain i think at 44 or 46
    lol completely missed out the good sleep 😪
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    (Original post by 1jonam16)
    lol peak, it wasn't as hard as you are making out; if you slept well and revised there's no excuse to get below 51-54, hence the grade bounadries will remain i think at 44 or 46
    For A*?
    What bout physics unit 2? What ur predictions for A*?
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    (Original post by YAY GCSE)
    It said to define moment not how do you work out moment
    that is the definition of a moment.look it up if you want to
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    For the last one, I just drew a really fat, curved lens
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    (Original post by dianmian12)
    'What is meant by a moment of force?'
    As stated in the CPG revision guide, it's the 'turning effect of a force'.
 
 
 
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