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    How would you work this out?
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    I keep getting incorrect answers

    For the first one: isn't it 1/3.5x10^3 then x100. Since the ruler is 1m. I don't get why you would convert it to cm because 3.5x10^3 is in meters. Shouldn't Units be the same ?

    But the answer is supposed to be 2.9%.
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    I have my mock tomorrow so please can someone try to help?
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    Hi,

    So, the percentage uncertainty is worked out by ((uncertainty)/value *100) and the uncertainty in this case, since the readings have not been repeated, is the precision of the value given, which is the smallest lines per metre you can measure - 0.1*10-3,

    and that divided by 3.5*10-3 *100 would = to 2.9%! (2s.f. at most for uncertainties)

    Hope that helped! It's quite hard to explain
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    (Original post by grace_zzz)
    Hi,

    So, the percentage uncertainty is worked out by ((uncertainty)/value *100) and the uncertainty in this case, since the readings have not been repeated, is the precision of the value given, which is the smallest lines per metre you can measure - 0.1*10-3,

    and that divided by 3.5*10-3 *100 would = to 2.9%! (2s.f. at most for uncertainties)

    Hope that helped! It's quite hard to explain
    Yes, it helps thanks. How would you calculated the absolute uncertainty?
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    (Original post by Questioness)
    Yes, it helps thanks. How would you calculated the absolute uncertainty?
    (Percent uncertainty/100)*Value

    (3.5&10^-3)*(2.9/100)=Absolute uncertainty

    Might be a bit late :s
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    (Original post by Dieselblue)
    (Percent uncertainty/100)*Value

    (3.5&10^-3)*(2.9/100)=Absolute uncertainty

    Might be a bit late :s
    Alright thanks .
 
 
 
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