Foundations of Astronomy (MindTap Course List)
14th Edition
ISBN: 9781337399920
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 24, Problem 2P
To determine
The time taken by meteor to reach the ground.
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A lot of asteroid and comet dust collides with Earth's atmosphere everyday. Assume that 500 tons of mass is added to Earth daily from the millions of meteors that enter our atmosphere. Estimate the time it would take for the Earth's mass to increase 0.2% with this impact rate. Is this mass accumulation significant to Earth as a planet.
The Tunguska asteroid is estimated to have had a diameter of 50 m, and to have produced an explosion equivalent to 10 megatons of TNT (1 megaton = 4.2 x 1015 joules). Assume that the asteroid was a sphere with density 2 g/cm3. Using the kinetic energy formula K = ½ mv2, where m is the mass and v is the speed, to estimate the speed of the asteroid. Assume that all kinetic energy is converted into the energy of the explosion.
Give your answer in km/s with one significant figure.
Which of the following events can NOT be explained by a giant impact event?
The large metallic core of Mercury
The extreme axis tilt of Uranus
The formation of the Moon
The backwards rotation of Venus
Chapter 24 Solutions
Foundations of Astronomy (MindTap Course List)
Ch. 24 - What is the difference between a meteoroid and an...Ch. 24 - What do Widmansttten patterns indicate about the...Ch. 24 - Why is it possible to acquire Moon rocks by...Ch. 24 - Prob. 4RQCh. 24 - Prob. 5RQCh. 24 - Prob. 6RQCh. 24 - Why do astronomers refer to carbonaceous...Ch. 24 - Prob. 8RQCh. 24 - Prob. 9RQCh. 24 - Of all the meteorites shown in Figure 24-2, which...
Ch. 24 - Meteorites were once part of which type of...Ch. 24 - Most sporadic meteors were once part of which...Ch. 24 - Meteors in showers were once part of which type of...Ch. 24 - Prob. 14RQCh. 24 - Prob. 15RQCh. 24 - Why do astronomers conclude that asteroids were...Ch. 24 - A fragment from the surface of a differentiated...Ch. 24 - What evidence indicates that the asteroids are...Ch. 24 - Prob. 19RQCh. 24 - Prob. 20RQCh. 24 - What evidence indicates that some asteroids once...Ch. 24 - How is the composition of meteorites related to...Ch. 24 - Prob. 23RQCh. 24 - Prob. 24RQCh. 24 - What is the difference between a centaur and a...Ch. 24 - What is the difference between a comets dust tail...Ch. 24 - What evidence indicates that a comets nucleus is...Ch. 24 - Why do most short-period comets have prograde...Ch. 24 - What are possible fates (or end-states) for...Ch. 24 - What are the hypotheses for how the bodies in the...Ch. 24 - Prob. 31RQCh. 24 - How would studying the chemical composition of...Ch. 24 - Assuming a night lasts 12 hours, how many total...Ch. 24 - Prob. 2PCh. 24 - If a single asteroid 1 km in diameter were to...Ch. 24 - If a trillion (1012) asteroids, each 1 km in...Ch. 24 - Prob. 5PCh. 24 - The asteroid Vesta has a mass of 2.6 1020 kg and...Ch. 24 - Prob. 7PCh. 24 - What is the maximum angular diameter of the dwarf...Ch. 24 - At what average distances from the Sun would you...Ch. 24 - Prob. 10PCh. 24 - If the velocity of the solar wind is about 4.0 ...Ch. 24 - What is the average distance of Comet Halley from...Ch. 24 - If you saw Comet Halley when the comet was 0.7 AU...Ch. 24 - What is the orbital period of a comet nucleus at...Ch. 24 - The mass of an average comets nucleus is about 1.0...Ch. 24 - Prob. 16PCh. 24 - Prob. 1SOPCh. 24 - Earth orbits 1 AU from the Sun, and the Oort cloud...Ch. 24 - Look at Figure 24-2d. Identify the chondrules by...Ch. 24 - Prob. 2LTLCh. 24 - Prob. 3LTLCh. 24 - Look at the images of Comet Mrkos on the left page...Ch. 24 - Prob. 5LTLCh. 24 - Prob. 6LTLCh. 24 - Prob. 7LTL
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