ISA Help
Say you measure to the nearest 1mm (the precision of your instrument)
And you have two readings, for example 100 and 99. Your range is 1 so your uncertainty is 0.5x1=0.5mm. But this is better than your least step/precision? Should I round it up to 1mm? AQA says only use the precision (1mm) if you have a range of zero
Hmm, I'm confused
And you have two readings, for example 100 and 99. Your range is 1 so your uncertainty is 0.5x1=0.5mm. But this is better than your least step/precision? Should I round it up to 1mm? AQA says only use the precision (1mm) if you have a range of zero
Hmm, I'm confused
Welcome to TSR physics
There is a recent thread on this here
http://www.thestudentroom.co.uk/showthread.php?t=2611546
It can sometimes save time if you do a search of the forum to see if the question has already been asked.
There is a recent thread on this here
http://www.thestudentroom.co.uk/showthread.php?t=2611546
It can sometimes save time if you do a search of the forum to see if the question has already been asked.
(edited 10 years ago)
use the largest uncertainty so +or- 1mm as 0.5mm wouldnt be able to be measured on the instruments, use the largest uncertainty basically 
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