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A person measures his or her heart rate by counting the number of beats in 30 s . If 40

College Physics for AP® Courses | 1st Edition | ISBN: 9781938168932 | Authors: Gregg Wolfe, Irina Lyublinskaya, Douglas Ingram ISBN: 9781938168932 372

Solution for problem 21 Chapter 1

College Physics for AP® Courses | 1st Edition

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College Physics for AP® Courses | 1st Edition | ISBN: 9781938168932 | Authors: Gregg Wolfe, Irina Lyublinskaya, Douglas Ingram

College Physics for AP® Courses | 1st Edition

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Problem 21

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?

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PHYS 101 LECTURE NOTES WEEK 1 Spencer Kociba Drexel University Lecture 1​ (01/10/17) Dr. Brigita Urbanc bu25@drexel.edu Notes about the class in general: ● Lecture attendance counts (taken using Learning Catalytics: a Pearson add-on that should come with MasteringPhysics. It’s a polling system where before the lecture the professor will email/give the session code for the day) ● All information for the course will be in BBLearn (but the labs have a separate website they may use) ● Course ID for MasteringPhysics: urbanc 67863 (section C) ● Prelectures are due Tuesday by 9am (no matter what section you are) Chapter 1: Units, Physical Quantities and Vectors ● Basic Physical Quantities ○ Length, time, mass (meters, seconds and kilograms are most commonly used) −6 ○ μm = micron/micrometer = 10 m ○ nm = nanometer = 10 ○ 1in= 2.54cm ○ Use conversion factors (which are equal to 1) to change units ● Scalar quantities ○ Single numbers (has a unit) ○ Note: speed is a scalar quantity because it is the magnitude of a vector but not the direction. ● Vector quantities ○ Values that describe something with both magnitude and direction (positive values) ● Vectors ○ ○ Equal if they have the same magnitude and direction

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Chapter 1, Problem 21 is Solved
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Textbook: College Physics for AP® Courses
Edition: 1
Author: Gregg Wolfe, Irina Lyublinskaya, Douglas Ingram
ISBN: 9781938168932

This full solution covers the following key subjects: . This expansive textbook survival guide covers 34 chapters, and 2282 solutions. College Physics for AP® Courses was written by and is associated to the ISBN: 9781938168932. This textbook survival guide was created for the textbook: College Physics for AP® Courses, edition: 1. The full step-by-step solution to problem: 21 from chapter: 1 was answered by , our top Physics solution expert on 03/09/18, 08:07PM. The answer to “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?” is broken down into a number of easy to follow steps, and 41 words. Since the solution to 21 from 1 chapter was answered, more than 244 students have viewed the full step-by-step answer.

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A person measures his or her heart rate by counting the number of beats in 30 s . If 40