Problem 9.21 (a) Calculate the (time-averaged) energy density of an electromagnetic plane wave in a conducting medium (Eq. 9.138). Show that the magnetic contribution al- ways dominates. [Answer: (k²/2μw²) E² e−²K²] е (b) Show that the intensity is (k/2µw) E²e−2kz.
Problem 9.21 (a) Calculate the (time-averaged) energy density of an electromagnetic plane wave in a conducting medium (Eq. 9.138). Show that the magnetic contribution al- ways dominates. [Answer: (k²/2μw²) E² e−²K²] е (b) Show that the intensity is (k/2µw) E²e−2kz.
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter1: A Physics Toolkit
Section1.2: Mathematics And Physics
Problem 13SSC
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![Problem 9.21
(a) Calculate the (time-averaged) energy density of an electromagnetic plane wave
in a conducting medium (Eq. 9.138). Show that the magnetic contribution al-
ways dominates. [Answer: (k²/2μw²) E² e−²K²]
е
(b) Show that the intensity is (k/2µw) E²e−2kz.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc158a850-76a9-4504-97b9-8593e0926539%2Fab6dce87-7465-4361-b128-e1479315195b%2F8bc9zu_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Problem 9.21
(a) Calculate the (time-averaged) energy density of an electromagnetic plane wave
in a conducting medium (Eq. 9.138). Show that the magnetic contribution al-
ways dominates. [Answer: (k²/2μw²) E² e−²K²]
е
(b) Show that the intensity is (k/2µw) E²e−2kz.
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