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    I got DAB as well
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    (Original post by jirapat121)
    It's 1 mark for correct choice.
    1 mark for explaining why it is good for this application
    1 mark for explaining the microstructure
    Thats not too bad then, 4/6 marks- hopefully i will make it up elsewhere
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    (Original post by Alex Gerrow)
    I got 4.8, but don't think I did very well this year!
    1/v = 1u + 1/f

    1/f = 1/v - 1/u
    = 4 + 0.8
    I think you're right
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    I think I ballsed up the bird chirrup what did you guys put for features and number of oscillations?
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    (Original post by IrfanR)
    I got DAB as well
    What's DAB?


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    (Original post by GabrielSmith1998)
    I did DAB for the materials. I panicked during the paper and did not properly talk about microstructure.
    I put DAB
    Then crossed it out for DBB


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    (Original post by PepperPotts)
    I think I ballsed up the bird chirrup what did you guys put for features and number of oscillations?
    1500
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    (Original post by RSS_100)
    Defo between 40-45 for an A. Would be surprised if its was higher than 46 or something.
    what do you think will be a D,C and B?
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    (Original post by Fandalf)
    That was the WORST paper. That's coming from a person who found last year's fine. **** YOU OCR
    Did you get D, C, B for the 3 graphs?
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    This has to be <40 for an A. Way worse than last year!
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    I put that there was more than one frequency combined together and that it was within the range of 2 and 4kHz??
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    (Original post by CancerousProblem)
    1500
    Aah, would you mind explaining?
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    average frequencey approximately 3khz
    duration half a second
    3000 x 0.5 = 1500
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    (Original post by PepperPotts)
    Aah, would you mind explaining?
    I think that I took some readings off the graph to find:
    1. The time period of the overall chirp
    2. The average frequency of the chirp oscillations
    3. Multiplied them together to find the number of oscillations
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    So, how does everyone think it went. I thought it was pretty easy tbh.
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    Could be have used either resistance for the resistivity one?
    Most in my class used 3.14
    Some used the 200 and something


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    (Original post by CancerousProblem)
    1/v = 1u + 1/f

    1/f = 1/v - 1/u
    = 4 + 0.8
    I think you're right
    Got this too as 1/u is -0.8
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    (Original post by scarr08)
    I put that there was more than one frequency combined together and that it was within the range of 2 and 4kHz??
    100 and 10khz so 9900


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    Pretty much have to ace the unit 2 to stand a chance of getting an A
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    Can't use the lens equation because there was no image only two objects
 
 
 
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