College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 20, Problem 92PE
A heart defibrillator passes 10.0 A through a patient’s torso for 5.00 ms in an attempt to restore normal beating. (a) How much charge passed? (b) What voltage was applied if 500 J of energy was dissipated? (c) What was the path's resistance? (d) Find the temperature increase caused in the 8.00 kg of affected tissue.
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A heart defibrillator passes 12 A of current through a patient's torso for 3×10-3 s to restore
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(a) How much charge passed through the patient's body?
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(c) Estimate the resistance of the electrical path through the person. State any
assumptions made in answering this question.
A heart defibrillator passes 12.4 A through a patient's torso for 5.00 ms in an attempt to restore normal beating.
(a) How much charge passed?
(b) What voltage was applied if 505 J of energy was dissipated?
kV
(c) What was the path's resistance?
(d) Find the temperature increase caused in the 8.00 kg of affected tissue. The specific heat of tissue is 3500 J/(kg · °C).
°C
Each of the six real batteries in the figure has an emf of 18.6 V and a resistance of 3.89 0. (a) What is the current through the (external)
resistance R=3.51 Q? (b) What is the potential difference across each battery? (c) What is the power of each battery? (d) At what rate
does each battery transfer energy to internal thermal energy?
(a) Number
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(d) Number
M.
P
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Chapter 20 Solutions
College Physics
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