Bundle: Foundations of Astronomy, Enhanced, 13th + LMS Integrated MindTap Astronomy, 2 terms (12 months) Printed Access Card
13th Edition
ISBN: 9781337368360
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Textbook Question
Chapter 24, Problem 9P
Given the size of Triton’s orbit (r = 355,000 km) and its orbital period (P = 5.88 days), calculate the mass of Neptune. (Hint: Use the formula for circular velocity, Eq. 5-1a. The formula requires input quantities in kg and m.)
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The ratio of charon to pluto's roche limit? or
How close is Charon to Pluto's Roche limit?
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Tutorial
Based on the orbital properties of Uranus, how far across the sky in arc seconds does it travel in one Earth
day? The average orbital radius is 2.88 x 109 km and the period is 84.0 years. (Assume Uranus and the Earth
are at the closest point to one another in their orbits.)
How many full Moons does this distance cover if the Moon has an angular diameter of 0.5 degrees?
Part 1 of 4
We first need to determine how fast the planet is moving across the sky. If we know the period and the
distance between the Sun and the planet we can calculate the velocity using:
2ar
which will tell us how many kilometers the planet travels in a day if we convert the period into days.
days
= (P
years'
|days/year
Pdays
days
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Chapter 24 Solutions
Bundle: Foundations of Astronomy, Enhanced, 13th + LMS Integrated MindTap Astronomy, 2 terms (12 months) Printed Access Card
Ch. 24 - Why didnt ancient astronomers know of Uranuss...Ch. 24 - Describe the location of the equinoxes and...Ch. 24 - Prob. 3RQCh. 24 - Prob. 4RQCh. 24 - Why is belt-zone circulation difficult to detect...Ch. 24 - Prob. 6RQCh. 24 - Prob. 7RQCh. 24 - Describe four characteristics in common among all...Ch. 24 - Describe four differences between the two ice...Ch. 24 - Prob. 10RQ
Ch. 24 - What are hypotheses for the origin of the rings of...Ch. 24 - How do the characteristics of Uranuss and Neptunes...Ch. 24 - If Uranus and Neptune had no satellites at all,...Ch. 24 - Why might the surface brightness of ring particles...Ch. 24 - Both Uranus and Neptune have a blue-green tint...Ch. 24 - How are the atmospheres of Earth and Triton...Ch. 24 - Prob. 17RQCh. 24 - When Neptune was discovered, how was its position...Ch. 24 - How can small worlds like Triton and Pluto have...Ch. 24 - Why do you suspect that Triton had a geologically...Ch. 24 - If you visited the surface of Pluto and found...Ch. 24 - What evidence can you give that Pluto and Charon...Ch. 24 - Why was Pluto reclassified as a dwarf planet?Ch. 24 - How was the discovery of Neptune not accidental?Ch. 24 - Prob. 1DQCh. 24 - Suggest a single phenomenon that could explain the...Ch. 24 - Prob. 3DQCh. 24 - Prob. 4DQCh. 24 - Prob. 5DQCh. 24 - What is the maximum angular diameter of Uranus as...Ch. 24 - One way to recognize a distant planet is by...Ch. 24 - What is the orbital velocity of Miranda around...Ch. 24 - Calculate Uranuss Roche radius. Are all of Uranuss...Ch. 24 - Prob. 5PCh. 24 - What is the escape velocity from the surface of an...Ch. 24 - What is the difference in the orbital velocities...Ch. 24 - Repeat Problem 2 for Pluto. In other words,...Ch. 24 - Given the size of Tritons orbit (r = 355,000 km)...Ch. 24 - Prob. 1LTLCh. 24 - Prob. 2LTLCh. 24 - Compare the interior cutaway sketches of the four...Ch. 24 - Prob. 4LTLCh. 24 - Review Figure 21-11. Which molecules can Triton...Ch. 24 - The image to the left shows how Uranus would look...
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- What is the orbital velocity of Miranda around Uranus? (Hint: Use the formula for circular velocity, Eq. 5-1a. The formula requires input quantities in kg and m.) (Note: Necessary data are given in Celestial Profile: Uranus and Appendix Table A-11.)arrow_forwardWhat is the difference in the orbital velocities of the two shepherd satellites of Uranus, Cordelia and Ophelia, which have orbital radii of 49,800 km and 53,800 km, respectively? (Hint: Use the formula for circular velocity, Eq. 5-1a. The formula requires input quantities in kg and m.)arrow_forwardWhat is the orbital velocity and period of a ring particle at the outer edge of Saturns A ring? (Hint: Use the formula for circular velocity, Eq. 5-1a. The formula requires input quantities in kg and m.) (Note: The radius of the outer edge of the A ring is 136,500 km.)arrow_forward
- What should the interior composition of Titan be if its density is 1.9 g/cm3? How do you know?arrow_forwardHow were the rotation periods of Uranus and Neptune measured?arrow_forwardWhat are hypotheses for the origin of the rings of Uranus and Neptune? Provide evidence to support these hypotheses.arrow_forward
- What is the observed angular speed of Neptune, along the ecliptic of Earth, when it is at opposition, in units of arc minutes / day? Presume the orbits are circular. Earth has orbital speeds of 30km/s and Neptune has 5.43km/s, Neptune here has orbital radius 30.1 AU. Now looking at Uranus for the same condition, in what direction along the ecliptic will it be traveling?arrow_forwardConsider an asteroid that orbits in a relatively circular orbit with a semimajor axis a = 2 au from the Sun. A typical asteroid has an albedo, or reflectivity, A ~ 0.3. At our closest approach to the asteroid, we make a measurement of the flux coming from the asteroid to be F = 3 × 10-15 w m-2. What is the radius of the asteroid in km? Include a labelled diagram along with your calculations.arrow_forwardAt what average distances (in AU) from the Sun would you expect to find Kirkwood gaps where the orbital period of asteroids are respectively four-ninths, and two-fifths, of the orbital period of Jupiter? (Hint: use Kepler's third law.) inner gap at AU outer gap at AU Compare your results with the figure. 7:2 3:1 8,3 5;2 7:3 9:4 2;1 9:5 7:4 53 8:5 3:2 Resonances Gap Gap Gap Gap GapGap Gap Distance from sun (AU) O The results agree with the figure. O The results do not agree with the figure.arrow_forward
- Compare Titan to Rhea. Estimate the strength of surface gravity on Titan compared to the gravity on Titan. How does this affect the possibility of an atmosphere on each? Use g=GM/R2 Titan Radius: 2,575 km, Mass: 2.31 x 1021 kg Rhea Radius: 764 km, Mass: 1.35 x 1023 kgarrow_forwardWhat is the angular diameter of Saturn (in degrees) as seen from the surface of Rhea?arrow_forwardthe area in between Mars' and Jupiter's orbit to be ~1.6e18 km2. Since there are roughly 750,000 asteroids, how much area (in km2) is available for one asteroid? Use this calculation to argue whether you are likely (or not) to hit an asteroid while flying through the asteroid belt. (Hint: To answer the first part of the question, find the area per asteroid)arrow_forward
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