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    (Original post by A+Hunter)
    From the Marking schemes the SQA like things with decimals in them lol So I'd go with 2.5 However I can't see why they'd mark you down for the other one
    Hahahaha okay phew! My spree of silly questions had ended until further notice
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    (Original post by Ethan100)
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    (Original post by sameehaiqbal)
    Hahahaha okay phew! My spree of silly questions had ended until further notice
    According to the course notes:

    In carrying out calculations and using relationships to solve problems, it is important to giveanswers to an appropriate number of significant figures. This means that the final answer canhave no more significant figures than the value with least number of significant figures used inthe calculation.

    Learners should be familiar with the use of scientific notation and this may be used asappropriate when large and small numbers are used in calculations.
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    "This means that the final answer canhave no more significant figures than the value with least number of significant figures used inthe calculation."

    Okay I'm lost again :confused::confused::confused:
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    If I put all my final answers to calculations at standard of 3 significant figures, am I following what it says above ?
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    (Original post by Ethan100)
    "This means that the final answer canhave no more significant figures than the value with least number of significant figures used inthe calculation."

    Okay I'm lost again :confused::confused::confused:
    Okay I'll try to explain again :P

    Take this question from the 2014 as an example:

    The worker has a mass of 80·0 kg and on a particular day absorbs7·2 mJ of energy from the X-ray machine.
    Calculate the absorbed dose received by the worker.

    So D=E/m
    D= 7.2x10-3/80
    D = 8.75x10-5

    You shouldn't leave you answer as this, Because the max number of sig figs in the question is 2 (7.2x10-3)

    So round your answer to either 8.8x10-5 or 9.0x10-5
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    (Original post by A+Hunter)
    Okay I'll try to explain again :P

    Take this question from the 2014 as an example:

    The worker has a mass of 80·0 kg and on a particular day absorbs7·2 mJ of energy from the X-ray machine.
    Calculate the absorbed dose received by the worker.

    So D=E/m
    D= 7.2x10-3/80
    D = 8.75x10-5

    You shouldn't leave you answer as this, Because the max number of sig figs in the question is 2 (7.2x10-3)

    So round your answer to either 8.8x10-5 or 9.0x10-5
    Okay I think I understand it now, Hopefully I remember to check the numbers for the exam on Tuesday :P Thanks for helping me !!
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    (Original post by Ethan100)
    Okay I think I understand it now, Hopefully I remember to check the numbers for the exam on Tuesday :P Thanks for helping me !!
    Np.

    Most the time they'll give you nice easy rounding ones so don't worry too much
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    Thank you !!!!
    What's everyone revising right now?
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    (Original post by sameehaiqbal)
    Thank you !!!!
    What's everyone revising right now?
    Waves and Radiation

    Doing waves right now, Amplitude,Wavelength, Frequency that stuff :P
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    (Original post by Ethan100)
    Waves and Radiation

    Doing waves right now, Amplitude,Wavelength, Frequency that stuff :P
    I'm still doing the stupid gas laws. Lol!

    After this i'm going to watch the videos Yammy gave and memorise the circuit rules... Dreading it
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    (Original post by sameehaiqbal)
    Thank you !!!!
    What's everyone revising right now?
    Doing Gas laws and power equations
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    What does everyone think will come up on Tuesday especially regarding the open ended questions?
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    I think nuclear radiation / some electricity question for the open-ended questions.. :P
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    (Original post by Ethan100)
    What prefixes do we need to know ?
    http://images.slideplayer.com/28/934...es/slide_8.jpg
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    (Original post by Ethan100)
    Thank You
    The most common ones will be kilo, mega, milli and micro, However I'd still go over the ones that sameehaiqbal posted
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    (Original post by Ethan100)
    Thank You

    (Original post by A+Hunter)
    The most common ones will be kilo, mega, milli and micro, However I'd still go over the ones that sameehaiqbal posted
    Ignore the deci prefix but the rest are pretty much relevant
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    If you're having trouble remembering the prefix's theres great mnemonics on this website: https://www.mnemonic-device.com/phys...metric-system/
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    I've finally learnt the circuit rules !!!!!!!!!!!!!!!!!!!!!
    Thank you .Jeff458 !!!!!!!!!!!!!!!!
 
 
 
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