Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 7, Problem 1Q
To determine
Whether or not, all the planets orbit the Sun in the same direction.
Whether or not, all the orbits are circular.
Expert Solution & Answer
Answer to Problem 1Q
No, Venus and Uranus revolve in opposite direction than rest of the planets.
None of the planets have circular orbit.
Explanation of Solution
Introduction:
Solar system has eight planets -Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Copernicus gave the heliocentric model, according to which, the sun is at the center of the solar system and planets orbit around it.
Direct motion refers to the direction motion of a planet similar to the other planets. Not all planets are in direct motion in the solar system. Venus and Uranus have retrograde a motion which means their direction of motion is opposite to that of other planets.
None of the planets have perfectly circular orbit. According to Kepler’s law of planetary motion, the planets revolve about the sun in elliptical orbits with sun at one of its foci.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
It takes Mercury about 88 days to revolve once around the sun. It takes Jupiter about 11.86 years to revolve once around the sun. How many revolutions does Mercury make around the sun in the time it takes Jupiter to revolve once around the sun? Use the conversion factor of 1 year = 365 days. Round your answer to the nearest tenth.
Why are satellites normally sent into orbit by firing them in an easterly direction, the direction in which Earth spins?
Why is it important to study satellites and planetary motion?
Chapter 7 Solutions
Universe: Stars And Galaxies
Ch. 7 - Prob. 1QCh. 7 - Prob. 2QCh. 7 - Prob. 3QCh. 7 - Prob. 4QCh. 7 - Prob. 5QCh. 7 - Prob. 6QCh. 7 - Prob. 7QCh. 7 - Prob. 8QCh. 7 - Prob. 9QCh. 7 - Prob. 10Q
Ch. 7 - Prob. 11QCh. 7 - Prob. 12QCh. 7 - Prob. 13QCh. 7 - Prob. 14QCh. 7 - Prob. 15QCh. 7 - Prob. 16QCh. 7 - Prob. 17QCh. 7 - Prob. 18QCh. 7 - Prob. 19QCh. 7 - Prob. 20QCh. 7 - Prob. 21QCh. 7 - Prob. 22QCh. 7 - Prob. 23QCh. 7 - Prob. 24QCh. 7 - Prob. 25QCh. 7 - Prob. 26QCh. 7 - Prob. 27QCh. 7 - Prob. 28QCh. 7 - Prob. 29QCh. 7 - Prob. 30QCh. 7 - Prob. 31QCh. 7 - Prob. 32QCh. 7 - Prob. 33QCh. 7 - Prob. 34QCh. 7 - Prob. 35QCh. 7 - Prob. 36QCh. 7 - Prob. 37QCh. 7 - Prob. 38QCh. 7 - Prob. 39QCh. 7 - Prob. 40QCh. 7 - Prob. 41Q
Knowledge Booster
Learn more about
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
- Which would have the longer orbital period: a moon 1 million km from the center of Jupiter, or a moon 1 million km from the center of Earth? Why?arrow_forwardWhich of the following is abundant on the Earth but not on the other seven planets? (16.3) (a) oxygen (b) water (c) life (d) all the precedingarrow_forwardMercury takes 88 days to complete an orbit around the Sun; Venus takes 225 to complete an orbit around the Sun. Which of the following might be the period of a Hohmann transfer orbit that takes you from Mercury to Venus? 140 days 450 days 225 days 88 days 44 days A spacecraft starts out in an eastward-moving circular orbit around Jupiter. It then burns its engines and increases its speed beyond Jupiter's escape speed - and it does this while it's over Jupiter's night hemisphere. Which of the following might be its destination? the Sun Mars Earth Uranus The chief advantage of solid rocket propellant is that it is the cheapest type of rocket fuel it ignites spontaneously when subject to high enough pressures it has the greatest thrust of any rocket fuel solid rocket engines can be shut off and turned on again A spacecraft is moving…arrow_forward
- A satellite can orbit at 5 kmkm above the Moon's surface but not at 5 kmkm above Earth's surface. Why?arrow_forwardLike all planets, the planet Venus orbits the Sun in periodic motion and simultaneously spins about its axis. Just as on Earth, the time to make one complete orbit (i.e., the period of orbit) is what defines a year. And the time to make one complete revolution about its axis (i.e., the period of rotation) is what defines a day. The period of orbit for the Earth is 365.25 days and the period of rotation is 24 hours (1.00 day). But when these same values for Venus are expressed relative to Earth, it is found that Venus has a period of orbit of 225 days and a period of rotation of 243 days. So for Venus inhabitants, a day would last longer than a year! Determine the frequency of orbit and the frequency of rotation (in Hertz) on Venus.arrow_forwardApproximately one billion years ago, the Moon orbited the Earth much closer that it does today. The radius of the orbit was only 24,400 km. Today, the radius is 385,000 km. The orbital period was only 23,400 s. The present period is 2.36 x 10^6 s. Assume the orbit of the Moon is circular. Calculate the ratio of the speed of the Moon in its ancient orbit to the speed that it has today.arrow_forward
- Jupiter has a mass of 1.9×10^27 kg, a radius of 7.1×10^4 km and one day lasts 9 hours and 55 minutes. How many times is the force of gravity bigger on Jupiters equator comared to Earth?arrow_forwardTidal force: Two equal masses a distance L apart joined by a string are in free fall toward a planet. The masses lie along a radial line from the planet's center. Find the tension in the string.arrow_forwardUsing planetary motion, prove that the planet always being bound to the attracting solar center and never escapes from it.arrow_forward
- Calculate the period of a satellite orbiting the Moon, 99 kmkm above the Moon's surface. Ignore effects of the Earth. The radius of the Moon is 1740 kmkm.arrow_forwardWhen tidal bulges are NOT in a direct Earth-moon line but slightly ahead of the moon, a. Earth’s gravity weakens. b. their gravitational field pulls the moon forward in its orbit, causing it to recede from Earth. c. their gravitational field pulls the moon back in its orbit, causing the moon to fall toward Earth. d. Earth’s gravity strengthens, causing the moon to orbit faster. e. the tidal bulges have no effect on the moon.arrow_forwardYou land on Mars and observe that one of its moons (Phobos) has an orbital period of 7.66 hours. If the Phobos were farther from Mars than it is now, it’s period would be a) less than 7.66 hrs. b) about 7.66 hrs. c) more than 7.66 hrs. d) difficult to predict without more information.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStax
Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
Stars and Galaxies (MindTap Course List)
Physics
ISBN:9781337399944
Author:Michael A. Seeds
Publisher:Cengage Learning
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Time Dilation - Einstein's Theory Of Relativity Explained!; Author: Science ABC;https://www.youtube.com/watch?v=yuD34tEpRFw;License: Standard YouTube License, CC-BY