EBK PHYSICS FOR SCIENTISTS & ENGINEERS
5th Edition
ISBN: 9780134296074
Author: GIANCOLI
Publisher: VST
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Question
Chapter 31, Problem 79GP
(a)
To determine
The direction of propagation of wave.
(b)
To determine
The expression for
(c)
To determine
Expression for the magnetic field of electromagnetic wave.
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A distant galaxy emits light that has a wavelength of
617.7 nm. On earth, the wavelength of this light is
measured to be 623.6 nm. (a) Decide whether this
galaxy is approaching or receding from the earth. (b)
Find the speed of the galaxy relative to the earth.
(Give your answer to 4 significant digits. Use
2.998 × 108 m/s as the speed of light.)
(a) The galaxy is
(b) Number
◆ from the earth
Units
✪
Your answer is partially correct.
A distant galaxy emits light that has a wavelength of 634.5 nm. On earth, the wavelength of this light is measured to be 639.0 nm. (a)
Decide whether this galaxy is approaching or receding from the earth. (b) Find the speed of the galaxy relative to the earth. (Give your
answer to 4 significant digits. Use 2.998 x 108 m/s as the speed of light.)
(a) The galaxy is
(b) Number
receding
2126000
from the earth.
Units
m/s
A distant galaxy emits light that has a wavelength of 655.6 nm. On earth, the wavelength of this light is measured to be 661.9 nm. (a)
Decide whether this galaxy is approaching or receding from the earth. (b) Find the speed of the galaxy relative to the earth. (Give your
answer to 4 significant digits. Use 2.998 × 108 m/s as the speed of light.)
Chapter 31 Solutions
EBK PHYSICS FOR SCIENTISTS & ENGINEERS
Ch. 31 - An electric field E points away from you, and its...Ch. 31 - Prob. 2QCh. 31 - Prob. 3QCh. 31 - The electric field in an EM wave traveling north...Ch. 31 - Is sound an electromagnetic wave? If not, what...Ch. 31 - Can EM waves travel through a perfect vacuum? Can...Ch. 31 - When you flip a light switch, does the overhead...Ch. 31 - Are the wavelengths of radio and television...Ch. 31 - What does the wavelength calculated in Example...Ch. 31 - Prob. 11Q
Ch. 31 - In the electromagnetic spectrum, what type of EM...Ch. 31 - Can radio waves have the same frequencies as sound...Ch. 31 - Discuss how cordless telephones make use of EM...Ch. 31 - Electromagnetic waves and sound waves can have the...Ch. 31 - What is the minimum angular speed at which...Ch. 31 - Prob. 37PCh. 31 - What size should the solar panel on a satellite...Ch. 31 - What is the range of wavelengths for (a) FM radio...Ch. 31 - Prob. 52GPCh. 31 - Prob. 54GPCh. 31 - Prob. 79GP
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