A calculator gives the speed of sound in a laboratory gas column as

PHYSICS · Multi-part · Fermi University Physics · Scientific Practice & Experimental Methods · Quantities, units and the practice of measurement · Quantities, units and the practice of measurement

Measurement and Method, Ch What a measured value is: quantities, units and the SI

Problem

c = 343.269\ \mathrm{m\,s^{-1}}

, with a relative uncertainty of

0.6\%

. ((a)) Estimate how many of the digits in

343.269

are actual claims about the speed of sound, given the relative uncertainty stated. ((b)) Write the result in the house form

c = \bar c \pm u(c)

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