The Cosmic Perspective (9th Edition)
9th Edition
ISBN: 9780134874364
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 3, Problem 27EAP
According to Kepler’s third law, (a) Mercury travels fastest in the part of its orbit in which it is closest to the Sun. (b) Jupiter orbits the Sun at a faster speed than Saturn. Cc) all the planets have nearly circular orbits.
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What is Kepler's first law of
planetary motion?
The period of a planet's
orbit is proportional to
its distance from the
sun.
Planets have circular
orbits.
Planets have elliptical
orbits.
The eccentricity of a
planet's orbit is
proportional to its
distance from the sun.
Kepler's 1st law says that our Solar System's planets orbit in ellipses around the Sun where the closest distance to the Sun is called perihelion.
Suppose I tell you that there is a planet with a perihelion distance of 2 AU and a semi-major axis of 1.5 AU.
Does this make physical sense? Explain why or why not.
Neptune orbits the Sun with an orbital radius of 4.495 x 10^12 m. If the earth to sun distance 1A.U. = 1.5 x 10^11 m, a) Determine how many A.U.'s is Neptune's orbital radius (Round to the nearest tenth). b) Given the Sun's mass is 1.99 x10^30 kg, use Newton's modified version of Kepler's formula T^2 = (4pi^2/Gm(star)) x d^3 to find the period in seconds using
scientific notation. (Round to the nearest thousandth). C) Convert the period in part b) to years (Round to the nearest tenth)
Chapter 3 Solutions
The Cosmic Perspective (9th Edition)
Ch. 3 - Prob. 1VSCCh. 3 - Use the following questions to check your...Ch. 3 - Use the following questions to check your...Ch. 3 - Use the following questions to check your...Ch. 3 - Use the following questions to check your...Ch. 3 - Prob. 6VSCCh. 3 - Prob. 7VSCCh. 3 - Prob. 1EAPCh. 3 - Why did ancient peoples study astronomy? Describe...Ch. 3 - Describe the astronomical origins of our day,...
Ch. 3 - What is a lunar calendar? How can it be kept...Ch. 3 - What do we mean by a model in science?Ch. 3 - Summarize the development of the Greek geocentric...Ch. 3 - What was the Copernican revolution, and how did it...Ch. 3 - 8. What is an ellipse? Define its foci, semimajor...Ch. 3 - 9. State and explain the meaning of each of...Ch. 3 - Describe the three hallmarks of science and how we...Ch. 3 - 11. What is the difference between a hypothesis...Ch. 3 - What is the basic idea behind astrology? Explain...Ch. 3 - Science or Nonscience? Each of the following...Ch. 3 - Science or Nonscience? Each of the following...Ch. 3 - Science or Nonscience?
Each of the following...Ch. 3 - Science or Nonscience?
Each of the following...Ch. 3 - Science or Nonscience?
Each of the following...Ch. 3 - Science or Nonscience? Each of the following...Ch. 3 - Science or Nonscience? Each of the following...Ch. 3 - Science or Nonscience?
Each of the following...Ch. 3 - Science or Nonscience?
Each of the following...Ch. 3 - Science or Nonscience? Each of the following...Ch. 3 - In the Greek geocentric model, the retrograde...Ch. 3 - Which of the following was not a major advantage...Ch. 3 - When we say that a planet has a highly eccentric...Ch. 3 - Earth is closer to the Sun in January than in...Ch. 3 - According to Kepler’s third law, (a) Mercury...Ch. 3 - Tycho Brahe’s contribution to astronomy included...Ch. 3 - Galileo’s contribution to astronomy included (a)...Ch. 3 - Which of the following is not true about...Ch. 3 - Which of the following is not true about a...Ch. 3 - When Einstein’s theory of gravity (general...Ch. 3 - What Makes It Science? Choose a single idea in the...Ch. 3 - Prob. 35EAPCh. 3 - Prob. 36EAPCh. 3 - Prob. 37EAPCh. 3 - Earth’s Shape. It took thousands of years for...Ch. 3 - Prob. 40EAPCh. 3 - Copernican Players. Using a bulleted-list format,...Ch. 3 - Prob. 44EAPCh. 3 - The Metonic Cycle. The length of our calendar year...Ch. 3 - Chinese Calendar. The traditional Chinese lunar...Ch. 3 - Method of Eratosthenes I. You are an astronomer on...Ch. 3 - Method of Eratosthenes II. You are an astronomer...Ch. 3 - Mars Orbit. Find the perihelion and aphelion...Ch. 3 - Eris Orbit. The dwarf planet Eris orbits the Sun...Ch. 3 - New Planet Orbit. A newly discovered planet orbits...Ch. 3 - Halley Orbit. Halley’s Comet orbits the Sun every...
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- Comet Halley (Fig. P11.21) approaches the Sun to within 0.570 AU, and its orbital period is 75.6 yr. (AU is the symbol for astronomical unit, where 1 AU = 1.50 1011 m is the mean EarthSun distance.) How far from the Sun will Halleys comet travel before it starts its return journey?arrow_forwardWhen Sedna was discovered in 2003, it was the most distant object known to orbit the Sun. Currently, it is moving toward the inner solar system. Its period is 10,500 years. Its perihelion distance is 75 AU. a. What is its semimajor axis in astronomical units? b. What is its aphelion distance?arrow_forwardAre Kepler’s laws purely descriptive, or do they contain causal information?arrow_forward
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- Which of the following statements is supported by Kepler's laws of planetary motion? Earth orbits the Sun at a constant speed, never speeding up or slowing down. Earth's orbit is a perfect circle, with the Sun located at the center of the circle. Earth orbits the Sun at a slightly faster speed every year. Earth has an elliptical orbit, with the Sun located at one focus of the ellipse.arrow_forwardNeptune circles the Sun at a distance of 4.50 x 1012 m once every 164 years. Saturn circles the Sun at a distance of 1.43 x 1012 m. What is the orbital period of Saturn? a) 88.6 y 702 b) 109 h C) 29.4 y d) 304 y Boş bırakarrow_forwardA planet is about 7.79 x 108 km (orbital radius) from the sun. It takes 1,425 days for the planet to go around its orbit (assume circular orbit). What is the orbital velocity in km/sec of the planet along its orbital path? What is its acceleration toward the sun in km/sec2? (Force attraction of sun = ma = mv2); r = orbital radius rarrow_forward
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