Physical Universe
15th Edition
ISBN: 9780077510534
Author: KRAUSKOPF
Publisher: Mcgraw-hill Higher Education (us)
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Textbook Question
Chapter 17, Problem 10E
Why do comets have tails only in the vicinity of the sun? Why do these tails always point away from the sun, even when the comet is receding from it?
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A comet has a period of 72.3 years and moves in an elliptical orbit in which its perihelion (closest approach to the Sun) is 0.540 AU. Find the semimajor axis of the comet and an estimate of the comet's
maximum distance from the Sun, both in astronomical units.
HINT
(a) the semimajor axis of the comet (in AU)
AU
(b) an estimate of the comet's maximum distance (in AU) from the Sun
AU
____ days
A comet has a period of 75.3 years and moves in an elliptical orbit in which its perihelion (closest approach to the Sun) is 0.640 AU. Find the semimajor axis of the comet and an estimate of the comet's maximum distance from the Sun, both in astronomical units.
(a)
the semimajor axis of the comet (in AU)
(b)
an estimate of the comet's maximum distance (in AU) from the Sun
Chapter 17 Solutions
Physical Universe
Ch. 17 - Comets a. follow orbits around the earth b. follow...Ch. 17 - Comets consist of a. leftover matter from the...Ch. 17 - Prob. 3MCCh. 17 - Meteor showers occur a. at the same times each...Ch. 17 - Prob. 5MCCh. 17 - Prob. 6MCCh. 17 - Prob. 7MCCh. 17 - Prob. 8MCCh. 17 - The planet nearest the sun is a. Mercury b. Venus...Ch. 17 - Prob. 10MC
Ch. 17 - Prob. 11MCCh. 17 - Prob. 12MCCh. 17 - Prob. 13MCCh. 17 - Prob. 14MCCh. 17 - Prob. 15MCCh. 17 - Prob. 16MCCh. 17 - An astronaut would weigh least on the surface of...Ch. 17 - Prob. 18MCCh. 17 - Prob. 19MCCh. 17 - Prob. 20MCCh. 17 - Prob. 21MCCh. 17 - Prob. 22MCCh. 17 - Prob. 23MCCh. 17 - Prob. 24MCCh. 17 - Prob. 25MCCh. 17 - Prob. 26MCCh. 17 - Prob. 27MCCh. 17 - Prob. 28MCCh. 17 - Prob. 29MCCh. 17 - Prob. 30MCCh. 17 - Prob. 31MCCh. 17 - Prob. 32MCCh. 17 - Prob. 33MCCh. 17 - Prob. 34MCCh. 17 - Prob. 35MCCh. 17 - Prob. 36MCCh. 17 - Prob. 37MCCh. 17 - Prob. 38MCCh. 17 - Prob. 39MCCh. 17 - Prob. 40MCCh. 17 - Prob. 41MCCh. 17 - Prob. 42MCCh. 17 - Prob. 43MCCh. 17 - Prob. 44MCCh. 17 - Prob. 45MCCh. 17 - Prob. 46MCCh. 17 - Prob. 47MCCh. 17 - Prob. 48MCCh. 17 - Prob. 1ECh. 17 - Prob. 2ECh. 17 - Which is the largest planet? The smallest? Which...Ch. 17 - Prob. 4ECh. 17 - Which planets, if any, have no satellites?Ch. 17 - Is the mass of the solar system concentrated in...Ch. 17 - On which planets would a person weigh less than on...Ch. 17 - Prob. 8ECh. 17 - Prob. 9ECh. 17 - Why do comets have tails only in the vicinity of...Ch. 17 - Prob. 11ECh. 17 - The Perseid meteor shower appears early every...Ch. 17 - Prob. 13ECh. 17 - Prob. 14ECh. 17 - Prob. 15ECh. 17 - Prob. 16ECh. 17 - Why is it very unlikely that there is life on...Ch. 17 - Prob. 18ECh. 17 - Prob. 19ECh. 17 - Venus is the brightest planet in the sky. How does...Ch. 17 - Prob. 21ECh. 17 - Prob. 22ECh. 17 - Prob. 23ECh. 17 - Give two reasons why the surface of Venus is so...Ch. 17 - Give three reasons why Venus is a brighter object...Ch. 17 - Prob. 26ECh. 17 - Mars has surface features that seem to be the...Ch. 17 - Why do temperatures on the surface of Mars vary...Ch. 17 - Prob. 29ECh. 17 - Prob. 30ECh. 17 - Why is ultraviolet radiation from the sun more of...Ch. 17 - Distinguish between asteroids and meteoroids.Ch. 17 - What is believed to be the origin of the...Ch. 17 - Why are few asteroids spherical, as planets are?Ch. 17 - Prob. 35ECh. 17 - Prob. 36ECh. 17 - Prob. 37ECh. 17 - When did conditions on the earth resemble those on...Ch. 17 - Prob. 39ECh. 17 - What are the chief similarities between Jupiter...Ch. 17 - Why are Saturns rings believed to consist of small...Ch. 17 - Is it likely that Saturns rings are permanent...Ch. 17 - Saturns satellite Titan has an atmosphere. Do any...Ch. 17 - Which planet resembles the earth most in size and...Ch. 17 - Is there any evidence that planets other than the...Ch. 17 - (a) Which planets besides Saturn have rings? (b)...Ch. 17 - What are thought to be the chief constituents of...Ch. 17 - (a) What is the chief distinction between planets...Ch. 17 - How does Pluto compare in size with the moon? With...Ch. 17 - We always see the same hemisphere of the moon....Ch. 17 - What is wrong with the statement that the moon is...Ch. 17 - The moon rises in the east at midnight on a...Ch. 17 - Approximately how much time elapses between new...Ch. 17 - Prob. 54ECh. 17 - Prob. 55ECh. 17 - Relative to the stars, the moon takes 2713 days to...Ch. 17 - Prob. 57ECh. 17 - Eclipses of the sun and of the moon do not occur...Ch. 17 - In what phase must the moon be at the time of a...Ch. 17 - Prob. 60ECh. 17 - Prob. 61ECh. 17 - Moonquakes are weaker and occur much less often...Ch. 17 - Prob. 63ECh. 17 - Prob. 64ECh. 17 - Prob. 65E
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