Is this uncertainty acceptable with this measurement: 3.47cm. ± 0.5 cm.?
Cuz remember something about that the uncertainty had to be equal to the degree of precision of the measurement.
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Cuz remember something about that the uncertainty had to be equal to the degree of precision of the measurement.
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No-- because your uncertainty is greater than the last significant digit (precision)
So either your measurement would have to be stated as 3.5 cm ± 0.5 cm --- or you would have to be able to make a measurement that can actually be measured to some fraction of a 100ths of a cm.
No.
The uncertainty of a measurement is half the smallest digit.
e.g So if your measurement was:
1.0cm, uncertainty would be 0.05cm
1cm, uncertainty would be 0.5 cm
1.00cm, uncertainty would be 0.005cm
Your measurement is 3.47cm, so your uncertainty is 0.005cm
Hope that makes sense!
Sure. You have a measurement to 2 decimal places, which makes a mockery of having a tolerance of +- .5cm.
2 decimal places, and probably +- .005cm., might be more appropriate.