21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 2, Problem 14QP
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Which is correct answer.
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The location on the celestial sphere which represents the path of the Sun followed in the sky is known as the
a.equator.
b.meridian.
c.ecliptic.
d.latitude.
e.longitude.
If I observe a specific phase of the Moon on January 1, 2022, when should I expect to observe the exact same phase?
a.On January 28, 2022 at 8pm.
b.On January 27, 2022 at 8pm.
c.On January 29, 2022 at noon
d.On January 30, 2022 at noon.
e.The day after.
A physical blackbody is
a.an object that does not absorb any radiation.
b.a body the emits only non-visible light.
c.an idealization of an object that absorbs all radiation falling upon it.
d.an object with a huge gravitational force.
e.any hot object whose overall colour is black.
Why is a sidereal day shorter than a solar day?
O A. precession of Earth's axis
B. the non-circular orbit of Earth around the Sun
C. the tilt of Earth's axis
D. the combined effect of the rotation of Earth and its orbit about the Sun
E. Earth year being a non-integer number of Earth days
2. During a sunrise, the Sun appears to "rise up" from the horizon. Why does this happen?
A. Earth is spinning on its axis.
B. The Sun is circling around Earth
C. The Sun is moving closer to Earth.
D. Earth is revolving around the Sun.
Explanation:
Chapter 2 Solutions
21st Century Astronomy
Ch. 2.1 - Prob. 2.1ACYUCh. 2.1 - Prob. 2.1BCYUCh. 2.2 - Prob. 2.2CYUCh. 2.3 - Prob. 2.3CYUCh. 2.4 - Prob. 2.4CYUCh. 2.5 - Prob. 2.5CYUCh. 2 - Prob. 1QPCh. 2 - Prob. 2QPCh. 2 - Prob. 3QPCh. 2 - Prob. 4QP
Ch. 2 - Prob. 5QPCh. 2 - Prob. 6QPCh. 2 - Prob. 7QPCh. 2 - Prob. 8QPCh. 2 - Prob. 9QPCh. 2 - Prob. 10QPCh. 2 - Prob. 11QPCh. 2 - Prob. 12QPCh. 2 - Prob. 13QPCh. 2 - Prob. 14QPCh. 2 - Prob. 15QPCh. 2 - Prob. 16QPCh. 2 - Prob. 17QPCh. 2 - Prob. 18QPCh. 2 - Prob. 19QPCh. 2 - Prob. 20QPCh. 2 - Prob. 21QPCh. 2 - Prob. 22QPCh. 2 - Prob. 23QPCh. 2 - Prob. 24QPCh. 2 - Prob. 25QPCh. 2 - Prob. 26QPCh. 2 - Prob. 27QPCh. 2 - Prob. 28QPCh. 2 - Prob. 29QPCh. 2 - Prob. 30QPCh. 2 - Prob. 31QPCh. 2 - Prob. 33QPCh. 2 - Prob. 34QPCh. 2 - Prob. 35QPCh. 2 - Prob. 36QPCh. 2 - Prob. 37QPCh. 2 - Prob. 38QPCh. 2 - Prob. 39QPCh. 2 - Prob. 40QPCh. 2 - Prob. 41QPCh. 2 - Prob. 42QPCh. 2 - Prob. 43QPCh. 2 - Prob. 44QPCh. 2 - Prob. 45QP
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- Of the following methods, which one can you use to directly calculate the peak altitude of the Sun in the sky on that day? a. by using the observer's watch and the Sun's azimuth b. by using the observer's latitude and the Sun's right ascension c. by using the observer's longitude and the ecliptic plane d. by using the observer's latitude and the Sun's declination e. by using the observer's altitude and the ecliptic planearrow_forwarda. December 21 b. March 21 c. June 21 d. It could be any day of the year. I'm on vacation in Ecuador. I'm having lunch at noon, and I notice that the sun is directly over my head. What date might it be?arrow_forward4. Over the course of a night, suppose you are observing two stars that you label as Star A and Star B. The coordinates of Star A are RA = 9h 00m 0s, DEC = 0° 0' 0" and the coordinates of Star B are RA = 11h 20m 0s, DEC = 0° 0' 0". On that night, Star A passes through the zenith at 12:15 A.M. local time. At what time will Star B pass through the zenith? Explain your answer.arrow_forward
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