The Essential Cosmic Perspective (8th Edition)
8th Edition
ISBN: 9780134446431
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 3, Problem 39EAP
Halley Orbit. Halley’s comet orbits the Sun every 76.0 years and has an orbital eccentricity of 0.97.
a. Find its average distance (semimajor axis).
b. Halleys perihelion distance is approximately 90 million km. Approximately what is its aphelion distance?
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A newly discovered planet orbits a star with the same mass as the Sun with a semi-major axis of 239.36 million kilometers. Its orbital eccentricity is 0.1.A. Find the planet's orbital period.B. Find the planet's perihelion distance.C. Find the planet's aphelion distance.
Comet Halley has a semi-major axis of 17.7 AU. (The AU, or Astronomical Unit, is the distance from the Sun to the Earth. 1 AU = 1.50x1011 m.) The eccentricity of Comet Halley is 0.967.
a. How far is Comet Halley from the sun at Aphelion, the farthest position from the sun? (Give your answer in AU.)?
b. What is comet Halley's orbital time? (Give your answer in years.) Note: Using Kepler's third law in the form: P2 = a3 is convenient. This equation works for any object orbiting the sun when the orbital period is in years and the semi major axis is in AU. The reason this works is because this equation is normalized to earth. The AU and year are both 1 for Earth.
c. In what year will Comet Halley start to move back toward the sun?
For any object orbiting the Sun, Kepler's Law may be written T2 = kr3. If T is measured in years and r in units of the Earth's
distance from the Sun, then k = 1. What, therefore, is the time (in years) for a comet to orbit the Sun if its mean radius from
the Sun is 10^4 times the Earth's distance from the Sun?
a. 10^4 years
b. 10^6 years
c. 10^8 years
d. 10^10 years
Chapter 3 Solutions
The Essential Cosmic Perspective (8th Edition)
Ch. 3 - Prob. 1VSCCh. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - In what way is scientific thinking natural to all...Ch. 3 - Prob. 2EAPCh. 3 - What is a lunar calendar? How can it be kept...
Ch. 3 - What do we mean by a model in science? Briefly...Ch. 3 - What do we mean by the Ptolemaic model? How did...Ch. 3 - What was the Copernican revolution, and how did it...Ch. 3 - What is an ellipse? Define its foci, semimajor...Ch. 3 - State and explain the meaning of each of Kepler’s...Ch. 3 - Describe the three hallmarks of science and...Ch. 3 - What is the difference between a hypothesis and a...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Prob. 20EAPCh. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Prob. 31EAPCh. 3 - Earth’s Shape. It took thousands of years for...Ch. 3 - Prob. 33EAPCh. 3 - Prob. 34EAPCh. 3 - Prob. 35EAPCh. 3 - Prob. 36EAPCh. 3 - Prob. 37EAPCh. 3 - Prob. 38EAPCh. 3 - Halley Orbit. Halley’s comet orbits the Sun every...Ch. 3 - Prob. 40EAPCh. 3 - 41. The Importance of Ancient Astronomy. Why was...Ch. 3 - Prob. 42EAPCh. 3 - Prob. 43EAPCh. 3 - The Galileo Affair. In recent years. the Roman...Ch. 3 - Prob. 45EAPCh. 3 - Prob. 46EAP
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