College Physics Problem 1.14

An infant’s pulse rate is measured to be 130±5 beats/min. What is the percent uncertainty in this measurement?

SOLUTION:

The percent uncertainty can be calculated as 

%uncertainty=frac{delta_{A}}{A}times100%

%uncertainty=frac{5  beats/min}{130  beats /min}times100%

%uncertainty=3.85%

Therefore, the percent uncertainty is 3.85%.

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