20. The electric field of an electromagnetic wave is described by the function: E = (375 V/m) cos[(1.99x107 rad/m)x+ (5.97x10¹5 rad/s)t]. What are the speed, the wavelength and the frequency of this wave? Is the wave visible to human eyes? (Answers: 3.00x10³ m/s; 316 nm; 9.50x10¹4Hz; No)

20. The electric field of an electromagnetic wave is described by the function: E = (375 V/m) cos[(1.99x107 rad/m)x+ (5.97x10¹5 rad/s)t]. What are the speed, the wavelength and the frequency of this wave? Is the wave visible to human eyes? (Answers: 3.00x10³ m/s; 316 nm; 9.50x10¹4Hz; No)

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 4CQ: If the electric field of an electromagnetic wave is oscillating along the z-axis and the magnetic...

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Question

20. The electric field of an electromagnetic wave is described by the function:
E = (375 V/m) cos[(1.99x107 rad/m)x+ (5.97x10¹5 rad/s)t]. What are the speed, the wavelength and
the frequency of this wave? Is the wave visible to human eyes? (Answers: 3.00x10³ m/s; 316
nm; 9.50x10¹4Hz; No)

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