Universe: Stars And Galaxies
Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 1, Problem 14Q
To determine

To explain:

Moon subtends an angle of 0.5 degrees.

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(a) Explain the relative positions of the Earth, Sun, and Moon during a solar eclipse? (b) Explain the relative positions of the Earth, Sun, and Moon during a lunar eclipse? (c) Does a solar eclipse occur during a full moon, a new moon, or a quarter moon? (d) Does a lunar eclipse occur during a full moon, a new moon, or a quarter moon? (e) What is the name of the total shadow during a solar eclipse? () What is the name of the partial shadow during a solar ecipse?
Use the small-angle formula to calculate the angular diameter (in arc minutes) of Mars (d = 6.79 ✕ 103 km) as seen from Earth if Mars were at the location of the Sun (D = 1.5 ✕ 108 km).
d. Diameter of the Sun I h A d. Standing on the beach at sunset, you extend the tip of your finger at your full arm length from your face, covering the Sun. Upon moving your finger around, you find that only about half of its width is needed to completely cover the Sun's diameter. You measure your finger width to be 0.5 inches. You know your arm length to be 28.0 inches. You have be told that the Sun is approximately 93 million miles away. Use this information to determine the approximate diameter of the Sun, filling in the table below with the proper quantities measure in meters. 1 = ½ finger g = eye level height d = object h = Diameter f= object height from level to top of eye level X = Arm A = angle width length distance from eye of the Sun object
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