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 2, Problem 14RQ
14. Why does the number of circumpolar constellations depend on the latitude of the observer?
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2) Calculate the difference in the geostationary altitude ( in km ) by by using solar day (24 hrs) and sidereal day (23hrs 56mins and 41 secs)
129.768
64.884
32.442
1000
6.
A star is observed to cross the meridian (due south) at an elevation of
34°, as seen from an observatory sited at a latitude of 42° north. What is
the declination of the star? At the moment of transit, a clock running on
Universal Time (UT) read 03 h 16min 24 s. At the previous midnight, the
sidereal time was 14h 38 min 54 s. Calculate the Right Ascension of the
star.
7. Suppose you are on a strange planet and observe, at night, that the stars do not rise and set, but circle parallel
to the horizon. Next, you walk in a constant direction for 8000 miles, and at your new location on the planet,
you find that all stars rise straight up in the east and set straight down in the west, perpendicular to the horizon.
How could you determine the circumference of the planet without any further observations? What is the
circumference, in miles, of the planet? [OER Chapter 2, Figuring for Yourself #43]
Chapter 2 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 2 - Why have astronomers added modern constellations...Ch. 2 - What is the difference between asterism d a...Ch. 2 - What characteristic do starts in a constellation...Ch. 2 - Do people from other cultures on Earth see the...Ch. 2 - Prob. 5RQCh. 2 - Prob. 6RQCh. 2 - What does the word apparent mean in apparent...Ch. 2 - In what ways is the celestial sphere a scientific...Ch. 2 - Why do astronomers use the word on to describe...Ch. 2 - Earth did not rotate, could you define the...
Ch. 2 - Where would you go on Earth if you wanted to be...Ch. 2 - Prob. 12RQCh. 2 - Explain h to make a simple astronomical...Ch. 2 - 14. Why does the number of circumpolar...Ch. 2 - How could you detect Earths precession t examining...Ch. 2 - How Do We know? How can a scientific model be...Ch. 2 - Using stars from one or more of the “official”...Ch. 2 - Prob. 2DQCh. 2 - Prob. 1PCh. 2 - If two stars differ by 8.6 magnitudes, what is...Ch. 2 - Prob. 3PCh. 2 - By what factor is sunlight brighter than...Ch. 2 - If you are at a latitude of 35° north of Earths...Ch. 2 - Prob. 1LTLCh. 2 - Prob. 2LTL
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Using stars from one or more of the “official” constellations, create an asterism that is significant to the culture of your school.arrow_forwardIn a part of Earth’s orbit where Earth is moving faster than usual around the Sun, would the length of the solar day change? If so, how? Explain.arrow_forwardIf you are at a latitude of 35° north of Earths equator, what is the angular distance from the northern horizon up to the north celestial pole? From the southern horizon down to the south celestial pole?arrow_forward
- TRUE OR FALSE only. 1. DIURNAL MOTION is caused by the daily motion of a planet on its axis. 2. Eudoxus was the first to propose that the sun is the center of the solar system. 3. The most perfect shape of the earth and universe according to Plato is cylindrical. 4. Ancient astronomers believed that the Earth did not move because there was no stellar parallax observed. 5. Galileo's observation of the planets supported the geocentric theory. 6. The planet closest to the sun has the shortest period of revolution about the sun. 7. In the proposed model by Copernicus, the earth was at the center of the universe. 8. Epicycles refer to the circular paths taken by planets. 9. The second law of planetary motion implies that the product of the velocity and the distance from the sun remain the same as a planet moves about the sun. 10. The first law implies that there is a common principle that governs the orbital motion of the planets.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_forwardWhy 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 daysarrow_forward
- A solar eclipse is only visible over a narrow strip on the Earth's surface. This is most closely associated with: Select one alternative: The ways in which our view of the sky depends on latitude. The combination of the Earth's rotation on its axis and its movement around the sun. The elliptical nature of the moon's orbit. The perspective dependence associated with parallax. Solar eclipses are actually visible to everyone on the daylight side of the earth.arrow_forwardH3. A total lunar eclipse is observed on December 31. Predict the next lunar eclipse. A total lunar eclipse will occur when the full moon and the nominal orbit of the moon line up together (The solution of two equations). From the following data algebraic equation for the phase of the moon and nominal orbit of the moon can be formed. A new moon (0%) was observed on December 17 and the full moon (10%) was observed on December 31 along with the nominal orbit of the moon (0%). The brimming orbit of the moon (100%) was observed on November 29. When the two equations are equal a lunar eclipse will occur. How many days from December 31 will next lunar eclipse occur? Given the coming year is a leap year - on what dates will the next 4 total lunar eclipses occur? Show the algebraic solution, any information you use.arrow_forwardSome Canadians troups are sent (as part of a U.N. peacekeeping force) to a country located on the Earth's equator. At night, when homesickness makes them gaze sleeplessly at the stars, which of the following will be familiar to them (the same as the equator in Canada) 1. The celestial poles are on the north and south points of the horizon. 2. The celestial equator is overhead and passes through the zenith. 3. All stars rise and set ( no star in the sky all night long) 4. All stars are above the horizon exactly half a day. 5. None of the Abovearrow_forward
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