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Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 1 - Problem 21pe
Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 1 - Problem 21pe

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Express your answers to problems in this | Ch 1 - 21PE

ISBN: 9780130606204 3

Solution for problem 21PE Chapter 1

Physics: Principles with Applications | 6th Edition

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Problem 21PE

Express your answers to problems in this section to the correct number of significant figures and proper units. A person measures his or her heart rate by counting the number of beats in 30 s. If 40 ± 1 beats are counted in 30.0 ± 0.5 s , what is the heart rate and its uncertainty in beats per minute?

Step-by-Step Solution:

Solution 21P: Step 1 of 3 Calculate the heart, heart rate = (40 bea) ( 60s) 30s 1min = 80 beats/ min Comment Step 2 of 3 Calculate the total uncertainty, % total uncertainty = % uncertainty in beat + % uncertainty in time = 40× 100 + 30.0× 100 = 2.5% + 1.7% = 4.2% Comment

Step 3 of 3

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