Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Question
Chapter 8, Problem 6Q
To determine
(a)
The mass of Earth if it had retained helium and hydrogen in the same proportion as the heavier elements that exist elsewhere in the universe.
To determine
(b)
The comparison of the answer in part (a) with the mass of Jupiter that is around
To determine
(c)
Whether the rocky core of Jupiter is expected to be larger, smaller or of the same size as the Earth.
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consider plutos diameter and mass. (2374)km & (1.303E22kg) and day which is 6.4 dayz long.
FIND: 1. please elaborate how would you get the answer to the escappe vel0city from plut0. 2. we would need to find the minimum energy required for an aircraft or ship of some sort with mass (525kg) to escape this planet.. 3. we would also need to find the t0tal energy for a complete orbit around the planet with an airship with a same mass (525) and an altitude of 224 km
Exoplanet orbital period (b)
For the system pictured in the previous problem (and using data given there), suppose that the star
has a mass of 0.025 solar masses, and the planet's mass is very small in comparison. Compute the
planet's orbit period. Assume the orbit is circular with a radius given by the distance listed in the
figure. Express your answer in years.
[Hint: this is a mildly challenging problem that requires plugging into a single formula but using
multiple unit conversions. You will need to use Kepler's 3rd law in its **general** form (not the
simplified form that is only applicable to objects orbiting our Sun). You will need to look up the
value of the constant G. Convert solar masses to kg, AU to m, and everything else to base Sl units;
find the period in seconds; then convert seconds to years.]
consider plutoz diameter and mass. (2374)km & (1.303E22kg) and day which js 6.4 dayz long.
FIND:
1. please elaborate how would you get the answer to the escappe vel0city from plut0.
2. we would need to find the minimum energy required for an aircraft or ship of some sort with mass (525kg) to escape this planet..
3. we would also need to find the t0tal energy for a complete orbit around the planet with an airship with a same mass (525) and an altitude of 224 km
Chapter 8 Solutions
Universe: Stars And Galaxies
Ch. 8 - Prob. 1QCh. 8 - Prob. 2QCh. 8 - Prob. 3QCh. 8 - Prob. 4QCh. 8 - Prob. 5QCh. 8 - Prob. 6QCh. 8 - Prob. 7QCh. 8 - Prob. 8QCh. 8 - Prob. 9QCh. 8 - Prob. 10Q
Ch. 8 - Prob. 11QCh. 8 - Prob. 12QCh. 8 - Prob. 13QCh. 8 - Prob. 14QCh. 8 - Prob. 15QCh. 8 - Prob. 16QCh. 8 - Prob. 17QCh. 8 - Prob. 18QCh. 8 - Prob. 19QCh. 8 - Prob. 20QCh. 8 - Prob. 21QCh. 8 - Prob. 22QCh. 8 - Prob. 23QCh. 8 - Prob. 24QCh. 8 - Prob. 25QCh. 8 - Prob. 26QCh. 8 - Prob. 27QCh. 8 - Prob. 28QCh. 8 - Prob. 29QCh. 8 - Prob. 30QCh. 8 - Prob. 31QCh. 8 - Prob. 32QCh. 8 - Prob. 33QCh. 8 - Prob. 34QCh. 8 - Prob. 35QCh. 8 - Prob. 36QCh. 8 - Prob. 37QCh. 8 - Prob. 38QCh. 8 - Prob. 39QCh. 8 - Prob. 40QCh. 8 - Prob. 41QCh. 8 - Prob. 42QCh. 8 - Prob. 43QCh. 8 - Prob. 44QCh. 8 - Prob. 45QCh. 8 - Prob. 46QCh. 8 - Prob. 47QCh. 8 - Prob. 48QCh. 8 - Prob. 49QCh. 8 - Prob. 50QCh. 8 - Prob. 51QCh. 8 - Prob. 52Q
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