Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 6, Problem 8P
To determine
The change in wavelength of Balmer-beta line
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An astronomer might observe in the Milky Way Galaxy have radial velocities as high as 500 km/s ( 5.00 × 102 km/s). What change in wavelength would this cause in the Balmer-beta line?
Estimate the thermally Doppler-broadened line widths for the hydrogen
Lya, C III, O VI, and Mg X lines are given below; use the temperatures
provided. Take the masses of H, c, O, and Mg to be 1 u, 12 u, 16 u, and 24 u,
respectively.
The 121.6-nm Lyman-alpha (Lya) emission line of hydrogen (n=2 →n =1) is
produced at the top of the chromosphere at 20,000 K, the ClII 97.7-nm line
originates at a level where the temperature is 90,000 K, the 103.2-nm line of
O VI occurs at 300,000 K, and Mg X creates a 62.5-nm line at 1.4 x 106 K.
Suppose we detect red photons at 656 nm emitted by electrons dropping from the n = 3 to the n = 2 orbital in hydrogen. The hydrogen is in an interstellar cloud at 5000k. If the cloud were heted to 10000 K, what would be the wavelength of the photons emitted by the transition?
a) 328 nm
b) 656 nm
c) 1312 nm
d) 658 nm
e) 654 nm
Chapter 6 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - Prob. 8RQCh. 6 - Prob. 9RQCh. 6 - Prob. 10RQ
Ch. 6 - Prob. 11RQCh. 6 - How Do We Know? How is the world you see around...Ch. 6 - Prob. 1DQCh. 6 - Prob. 2DQCh. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - If one star has a temperature of 6000 K and...Ch. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 1LTLCh. 6 - Prob. 2LTLCh. 6 - Prob. 3LTLCh. 6 - Prob. 4LTL
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