Convert the following absolute uncertainties to relative uncertainties.

a. 20.9 ± 0.4
b. 15.1 ± 0.8
c. 388 ± 23
d. 2.465 ± 0.009


(a) The relative uncertainty is 0.4/20.9 = 1.9%
(b) The relative uncertainty is 0.8/15.1 = 5.3%
(c) The relative uncertainty is 23/388 = 5.9%
(d) The relative uncertainty is 0.009/2.465 = 0.37%

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