Raw Data and Data Processing

Sample calculation for density (shown for iron block):

Mass/g = (251.7 ± 0.1)g

Relative uncertainty =         =        = 3.972983711 x 10-4  = 4 x 10-4

Therefore,

Mass/g = (251.7 ± 4 x 10-4)g

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Volume/cm3 = (3.1 ± 0.1)cm3 x (3.1 ± 0.1)cm3 x (3.1 ± 0.1)cm3

Relative uncertainty =     =   = 0.032258064

As we are finding the volume, we need to add the uncertainties of all the measurements, i.e. length, width and height. In this case the material was a cube, where the measurements were the same and even the uncertainties, thus we can multiplied the uncertainty by 3, i.e.

0.032258064 x 3 = 0.0967741935

When converted in percentage we get: 9.677% ≈ 10%

Volume = 3.1cm x 3.1cm x 3.1cm   = 29.791 cm3

Converting ...

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