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edugen Wiley plus.com Return to Blackboard Wiley PLUS Cutnell, Physics, 10e Help

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Question

edugen Wiley plus.com Return to Blackboard Wiley PLUS Cutnell, Physics, 10e Help l System Announcements Assignment Assignment open Assignment PRINTER VERSION BACK NEXT ASSIGNMENT RESOURCES Chapter 20, Problem 103 HW#8RCCircChap 22 20, Prob n a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 1.9x 10 Q. One pulse is delivered every time the fully charged capacitor loses 60.4% of its original charge. What is the capacitance of the capacitor? Number Units Chapter 22 Problem 04 Chapter 22, Probl the tolerance is +/-6% Chapter 22 Problem 16 Chapter 22 Problem 33 Chapter 22 Problem 41 Chapter 22, Problem 44 By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Chapter 22, Probl Chapter 22 Problem 64 Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER Review Score Earn Maximum Points available only if you Review Results by Study answer this question correctly in four objective attempts or less. Copyright o by John Wiley & Sons, Inc. or related companies. All rights reserved. 2000-2017 License Agreement I Privacy Policy I 2000-2017 John Wiley Sons Inc. All Rights Reserved. A Division of John Wiley 8 Sons, Inc. Version 4.22.2.9

Explanation / Answer

step;1

Given that

pulse in min =81 time

1pulse time t=60 sec/85 pulses=0.71 sec

resistance R=1.9*10^6 ohms

step;2

now we find the capacitance of capacitor

Q=qo[1-e^-t/CR]

Q=60.4Q/100[1-e^-0.71/C*1.9*10^6]

1.66=1-e^-0.71/c*1.9*10^6

e^-0.71/C*1.9*10^6=1-1.66

0.71/c*1.9*10^6=Log[1-1.66]

0.71/C*1.9*10^6=0.18

C*1.9*10^6=0.71/0.18

C*1.9*10^6=3.94

capacitance C=2.1*10^-6 F