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Chapter 23: Q39 P (page 991)
The index of refraction of water is . At what speed would a wave crest in a beam of light travel through this medium?
The speed of wave in the water is .
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What is the wavelength of ultraviolet light whose frequency is ?
Calculate the wave length for several examples of sinusoidal electromagnetic radiation:
radio,
television,
red light,
blue light,
(Note for comparison that an atomic diameter is about ).
If a diver who is underwater shines a flashlight upward toward the surface, at an angle of from the normal, at what angle does the light emerge from the water? The indices of refraction are: water, ; air,
In Figure 23.116 electromagnetic radiation is moving to the right, and at this time and place the electric field is horizontal and points out of the page. The magnitude of the electric field is . What are the magnitude and direction of the associated magnetic field at this time and place?
An electric field of acts on an electron, resulting in an acceleration of for a short time. What is the magnitude of the radiative electric field observed at a location a distance of away along a line perpendicular to the direction of the acceleration?
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