PHYSICS

a=40.0 plus-minus 0.1 cm (uncertainty)
b=2.5 plus-minus 0.05 cm (uncertainty)

Find a/b and its uncertainty

Is it 16cm plus-minus 1cm of uncertainty

or is it 16.0cm plus-minus 0.4 cm of uncertainty

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  1. multiplying or dividing
    ...add the percent uncertainties

    16 ± 2.25%

    the cm are cancelled in the division process...it's just a ratio

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