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shusha [124]
3 years ago
8

(a) A person's blood pressure is measured to be 120 ± 2 mm Hg120 ± 2 mm Hg. What is its percent uncertainty? (b) Assuming the sa

me percent uncertainty, what is the uncertainty in a blood pressure measurement of 80 mm Hg?
Health
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

percent uncertainty =  1.667 %

uncertainty is 1.33 mm Hg

Explanation:

given given

blood pressure p = 120 mm Hg

varies pressure Δp = 2 mm Hg

to find out

percent uncertainty

solution

we find here first percentage of  uncertainty that is

percent uncertainty = Δp / p  × 100%

put here value

percent uncertainty = 2 / 120  × 100%

percent uncertainty =  1.667 %

and

uncertainty for 80 mm Hg

uncertainty = 1.667 × 80    /  100

uncertainty = 133.36 / 100

uncertainty is 1.33 mm Hg

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