21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 4, Problem 20QP
To determine
Which comet will return to the vicinity of Sun?
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Suppose an asteroid has a tiny moon orbiting around it
(which does occur). If the moon is 1.1 km wide, is 142
km from the center of the asteroid (which is 36 km in
diameter), and assuming the moon has a circular orbit
around the asteroid of period 36 hours, what is the
mass of the asteroid?
m =
kg [Note: Use exponential notation
for your answer with a format "9.99E12" for 9.99 x
1012.]
What would the radius of the orbit of the same tiny
moon be if it had an orbital period of 50.9 hours? Give
your answer in km:
R =
km
What is the density of the asteroid? Recall that density
is mass per unit volume. The volume of the asteroid
can be calculated based on its diameter (assume it is
spherical in shape).
Р
kg/m³
Give me the solution for the problem.
The correct answers are:
A: -1.4 x 10-6 km/h. The comet's speed has been decreased by this amount. Hence, the effect is negligble.
B: -6.7 x 10-8 km/h. The Earth's speed has been decreased by this amount. Also, the effect is negligble.
Calculate the escape velocity to an orbit of 393 km height from a planet with the radius of 2000 km and the density of 3400 kg-m³. Give your answer in
Sl units.
Chapter 4 Solutions
21st Century Astronomy
Ch. 4.1 - Prob. 4.1ACYUCh. 4.1 - Prob. 4.1BCYUCh. 4.2 - Prob. 4.2CYUCh. 4.3 - Prob. 4.3CYUCh. 4.4 - Prob. 4.4CYUCh. 4 - Prob. 1QPCh. 4 - Prob. 2QPCh. 4 - Prob. 3QPCh. 4 - Prob. 4QPCh. 4 - Prob. 5QP
Ch. 4 - Prob. 6QPCh. 4 - Prob. 7QPCh. 4 - Prob. 8QPCh. 4 - Prob. 9QPCh. 4 - Prob. 10QPCh. 4 - Prob. 11QPCh. 4 - Prob. 12QPCh. 4 - Prob. 13QPCh. 4 - Prob. 14QPCh. 4 - Prob. 15QPCh. 4 - Prob. 16QPCh. 4 - Prob. 17QPCh. 4 - Prob. 18QPCh. 4 - Prob. 19QPCh. 4 - Prob. 20QPCh. 4 - Prob. 21QPCh. 4 - Prob. 22QPCh. 4 - Prob. 23QPCh. 4 - Prob. 24QPCh. 4 - Prob. 25QPCh. 4 - Prob. 26QPCh. 4 - Prob. 27QPCh. 4 - Prob. 28QPCh. 4 - Prob. 29QPCh. 4 - Prob. 30QPCh. 4 - Prob. 31QPCh. 4 - Prob. 32QPCh. 4 - Prob. 33QPCh. 4 - Prob. 34QPCh. 4 - Prob. 35QPCh. 4 - Prob. 36QPCh. 4 - Prob. 37QPCh. 4 - Prob. 38QPCh. 4 - Prob. 39QPCh. 4 - Prob. 40QPCh. 4 - Prob. 41QPCh. 4 - Prob. 42QPCh. 4 - Prob. 43QPCh. 4 - Prob. 44QPCh. 4 - Prob. 45QP
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