Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 14, Problem 23E
Estimate the maximum height of the mountains on a hypothetical planet similar to Earth but with twice the surface gravity of our planet.
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You decide to go on an interstellar mission to explore some of the newly discovered extrasolar
planets orbiting the star ROTOR. Your spacecraft arrives in the new system, in which there are
five planets. ROTOR is identical to the Sun (in terms of its size, mass, age and composition). From
your observations of these planets, you collect the following data:
Density Average Distance
from star (AU]
Planet
Mass
Radius
Albedo
Temp.
[C]
Surf. Press.
MOI
Rotation
[Earth = 1]
(Earth = 1] [g/cm³]
[Atm.]
Period (Hours]
Factor
SIEVER
EUGENIA
4.0
0.001
2.0
0.1
5.0
1.0
0.3
20
0.8
N/A
3.0
0.2
N/A
0.3
0.4
0.35
20
10
500
1000
5.0
4.0
0.5
0.8
0.4
0.7
-50
MARLENE
CRILE
1.0
1.0
3.0
8.0
1,5
0.0
0.50
0.50
0.25
150
0.4
JANUS
100
12
0.1
10
-80
0.2
200
Figure 1:
А
Rotor
850
890
900
Wavelength (nm)
A
Sun
В
C
860
900
910
Wavelength (nm)
2414
a as
The total mass of this planet's atmosphere may be higher than the Earth's but the gases present must be very light ones like hydrogen and helium.
The escape velocity of the planet will be very high.
Due to the high escape velocity, the light gases were not able to escape and hence forming a thick atmosphere
Is the escaping velocity for this planet greater or lower than that of the earth?
The figure shows, not to scale, a cross section through the interior of Earth. Rather than
being uniform throughout, Earth is divided into three zones: an outer crust, a mantle, and an
inner core. The dimensions of these zones and the masses contained within them are shown
on the figure. Earth has a total mass of 5.98 x 1024 kg and a radius of 6370 km. Ignore
rotation and assume that Earth is spherical. (a) Calculate ag at the surface. (b) Suppose that a
bore hole (the Mohole) is driven to the crust-mantle interface at a depth of 25.0 km; what
would be the value of ag at the bottom of the hole? (c) Suppose that Earth were a uniform
sphere with the same total mass and size. What would be the value of ag at a depth of 25.0
km? (Precise measurements of ag are sensitive probes of the interior structure of Earth,
although results can be clouded by local variations in mass distribution.)
6345 km
(a) Number
(b) Number
25 km
Number i
3490 km
-Core, 1.93 x 1024 kg
Mantle, 4.01 × 1024 kg
Crust,…
Chapter 14 Solutions
Astronomy
Ch. 14 - A friend of yours who has not taken astronomy sees...Ch. 14 - In what ways are meteorites different from...Ch. 14 - How are comets related to meteor showers?Ch. 14 - What do we mean by primitive material? How can we...Ch. 14 - Describe the solar nebula, and outline the...Ch. 14 - Why do the giant planets and their moons have...Ch. 14 - How do the planets discovered so far around other...Ch. 14 - Explain the role of impacts in planetary...Ch. 14 - Why are some planets and moons more geologically...Ch. 14 - Summarize the origin and evolution of the...
Ch. 14 - Why do meteors in a meteor shower appear to come...Ch. 14 - What methods do scientists use to distinguish a...Ch. 14 - Why do iron meteorites represent a much higher...Ch. 14 - Why is it more useful to classify meteorites...Ch. 14 - Which meteorites are the most useful for defining...Ch. 14 - Suppose a new primitive meteorite is discovered...Ch. 14 - How do we know when the solar system formed?...Ch. 14 - We have seen how Mars can support greater...Ch. 14 - Present theory suggests that giant planets cannot...Ch. 14 - Why are meteorites of primitive material...Ch. 14 - How long would material take to go around if the...Ch. 14 - Consider the differentiated meteorites. We think...Ch. 14 - Estimate the maximum height of the mountains on a...
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