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# Express your answers to problems in this | Ch 1 - 20PE

ISBN: 9780130606204 3

## Solution for problem 20PE Chapter 1

Physics: Principles with Applications | 6th Edition

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Problem 20PE

Express your answers to problems in this section to the correct number of significant figures and proper units. (a) A person’s blood pressure is measured to be 120 ± 2 mm Hg . What is its percent uncertainty? (b) Assuming the same percent uncertainty, what is the uncertainty in a blood pressure measurement of 80 mm Hg ?

Step-by-Step Solution:

Solution 20PE: Step 1 of 4 (a) The formula to find the percent uncertainty is, p % uncertainty = p × 100 Here pis the uncertainty in blood pressure, is the pressure. Comment Step 2 of 4 The range of a person’s blood pressure is given as 120 ± 2mm Hg. Substitute 2mm Hg for pand for . 120mm Hg for P Therefore, 2mm Hg % uncertainty = (120 nn Hg× 100 = 2% Hence, the percent uncertainty is . Comment

Step 3 of 4

Step 4 of 4

##### ISBN: 9780130606204

Since the solution to 20PE from 1 chapter was answered, more than 296 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Physics: Principles with Applications, edition: 6. The full step-by-step solution to problem: 20PE from chapter: 1 was answered by , our top Physics solution expert on 03/03/17, 03:53PM. Physics: Principles with Applications was written by and is associated to the ISBN: 9780130606204. This full solution covers the following key subjects: uncertainty, Blood, pressure, measurement, express. This expansive textbook survival guide covers 35 chapters, and 3914 solutions. The answer to “Express your answers to problems in this section to the correct number of significant figures and proper units. (a) A person’s blood pressure is measured to be 120 ± 2 mm Hg . What is its percent uncertainty? (b) Assuming the same percent uncertainty, what is the uncertainty in a blood pressure measurement of 80 mm Hg ?” is broken down into a number of easy to follow steps, and 58 words.

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