UNIVERSE LL W/SAPLINGPLUS MULTI SEMESTER
UNIVERSE LL W/SAPLINGPLUS MULTI SEMESTER
11th Edition
ISBN: 9781319278670
Author: Freedman
Publisher: MAC HIGHER
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Chapter 16, Problem 35Q
To determine

To explain: The reason behind the often use of Hα filter by the astronomers to view the chromosphere. Also, explain the way in which this can also be performed using filters which are transparent only to wavelengths emitted by H and K lines of ionized calcium.

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Suppose YOUR body temperature averages 98.6 F. 1. How much radiant energy in Wm^-2 is emitted from YOUR body?  2. What is the total radiant energy in W that is emitted from YOUR body? 3. At what wavelength does YOUR body emit the largest amount of radiant energy?
If a species evolved in order to see white tissues of the body, which wavelength do they have receptors for? *   A.) Gamma   B.) Infrared   C.) Ultraviolet   D.) X-ray   If a species evolved in order to see bones and metals, which wavelength do they have receptors for? *   A.) Gamma   B.) Infrared   C.) Ultraviolet   D.) X-ray
Our sun is a standard sequence yellow dwarf star with a temperature of about 6000 K and a radius of about 7 x 10^8 m, emitting about 3.8 x 10^26 W.  There are yellow giant stars with the same blackbody color (temperature) but with a radius 10 times larger than our sun (7 x 10^9 m).  Estimate the power (emitted radiation) from one of these yellow giant stars.   (Hint: how much larger is the surface area of the yellow giant star, and pay careful attention to the power of 10 below.)

Chapter 16 Solutions

UNIVERSE LL W/SAPLINGPLUS MULTI SEMESTER

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