The human heart creates the body's largest electromagnetic field. During normal beating, an electrocardiogram measures a voltage of 2.7 mV between two electrical contact pads on the chest that are separated by 25 cm. This creates an electromagnetic wave with a frequency of 1.2 Hz. (a) What is the wavelength of this wave? (b) What is the maximum value of the electric field in this wave? (c) What is the maximum value of the magnetic field? (d) What is the average total energy density in the wave? <> (a) Number 25E7 Units m (b) Number .0108 Units V/m (c) Number 3.6E-11 Units T (d) Number 5.16E-16 Units J/m^3

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
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Chapter16: Electromagnetic Waves
Section: Chapter Questions
Problem 85P: During normal beating, the heart creates a maximum 4.00-mV potential across 0.300 m of a person’s...
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The human heart creates the body's largest electromagnetic field. During
normal beating, an electrocardiogram measures a voltage of 2.7 mV
between two electrical contact pads on the chest that are separated by 25
cm. This creates an electromagnetic wave with a frequency of 1.2 Hz. (a)
What is the wavelength of this wave? (b) What is the maximum value of the
electric field in this wave? (c) What is the maximum value of the magnetic
field? (d) What is the average total energy density in the wave?
(a) Number
25E7
(b) Number
.0108
Units
3
Units
V/m
(c) Number
i
3.6E-11
Units
T
(d) Number
i
5.16E-16
Units
J/m^3
Transcribed Image Text:The human heart creates the body's largest electromagnetic field. During normal beating, an electrocardiogram measures a voltage of 2.7 mV between two electrical contact pads on the chest that are separated by 25 cm. This creates an electromagnetic wave with a frequency of 1.2 Hz. (a) What is the wavelength of this wave? (b) What is the maximum value of the electric field in this wave? (c) What is the maximum value of the magnetic field? (d) What is the average total energy density in the wave? (a) Number 25E7 (b) Number .0108 Units 3 Units V/m (c) Number i 3.6E-11 Units T (d) Number i 5.16E-16 Units J/m^3
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