(a) A person's blood pressure is measured to be 112 5 mm Hg. What is its percent uncertainty?

(a) A person's blood pressure is measured to be 112 ± 5 mm Hg. What is its percent uncertainty? (Note that percent uncertainties should be reported to two significant figures.)%(b) Assuming the same percent uncertainty, what is the uncertainty in a blood pressure measurement of 80 mm Hg? (Note that uncertainties should be reported to one significant figure.)mm Hg

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