21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 3, Problem 10QP
To determine
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7. The brightest four moons of Jupiter were discovered by Galileo with one of his earliest telescopes.
These moons, lo, Europa, Ganymede, and Callisto, are called the Galilean moons in his honour.
Some of the available data about these moons are given below.
MOON
r (km)
V
T (earthyears)
0.004837
lo
a.
Europa
Ganymede
Callisto
4.219 x
105
6.712 x
105
1.853 x
106
0.0195884
The radii are from the centre of Jupiter to the centre of the moon in question. One earth year has
365 days.
Using the data for above, find the mass of Jupiter. Be specific as to which line of data was
used and why. Show all work.
Which spacecraft flew past Mercury three times in the 1970s?
a.
Galileo
b.
Cassini
c.
Voyager 2
d.
Mariner 10
e.
Hubble
Which of the following is NOT a dwarf planet?
a.
Pluto
b.
Eris
c.
Vesta
d.
Ceres
e.
Haumea
The Earth's magnetic field keeps our planet's
a.
temperature from rising too much
b.
moon in its current orbit
c.
atmosphere safe from the solar wind
d.
spin axis from wobbling too much
Chapter 3 Solutions
21st Century Astronomy
Ch. 3.1 - Prob. 3.1ACYUCh. 3.1 - Prob. 3.1BCYUCh. 3.2 - Prob. 3.2CYUCh. 3.3 - Prob. 3.3CYUCh. 3.4 - Prob. 3.4CYUCh. 3 - Prob. 1QPCh. 3 - Prob. 2QPCh. 3 - Prob. 3QPCh. 3 - Prob. 4QPCh. 3 - Prob. 5QP
Ch. 3 - Prob. 6QPCh. 3 - Prob. 7QPCh. 3 - Prob. 8QPCh. 3 - Prob. 9QPCh. 3 - Prob. 10QPCh. 3 - Prob. 11QPCh. 3 - Prob. 12QPCh. 3 - Prob. 13QPCh. 3 - Prob. 14QPCh. 3 - Prob. 15QPCh. 3 - Prob. 16QPCh. 3 - Prob. 17QPCh. 3 - Prob. 18QPCh. 3 - Prob. 19QPCh. 3 - Prob. 20QPCh. 3 - Prob. 21QPCh. 3 - Prob. 22QPCh. 3 - Prob. 23QPCh. 3 - Prob. 24QPCh. 3 - Prob. 25QPCh. 3 - Prob. 26QPCh. 3 - Prob. 27QPCh. 3 - Prob. 28QPCh. 3 - Prob. 29QPCh. 3 - Prob. 30QPCh. 3 - Prob. 31QPCh. 3 - Prob. 32QPCh. 3 - Prob. 33QPCh. 3 - Prob. 34QPCh. 3 - Prob. 35QPCh. 3 - Prob. 36QPCh. 3 - Prob. 37QPCh. 3 - Prob. 38QPCh. 3 - Prob. 39QPCh. 3 - Prob. 40QPCh. 3 - Prob. 41QPCh. 3 - Prob. 42QPCh. 3 - Prob. 43QPCh. 3 - Prob. 44QPCh. 3 - Prob. 45QP
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- Solar eclipse will take place when: A. the sun is between the moon and the earth B. the earth is between the moon and the sun C. the moon is between the sun and the earth D. the moon does not lie on the line joining the sun and the eartharrow_forward1. Mars takes 1.88 years to complete one orbit around the sun. What is its average distance from the sun?arrow_forward1. The average orbital distance of Mars is 1.52 times the average orbital distance of the Earth. Knowing that the Earth orbits the sun in approximately 365 days, use Kepler's law of harmonies to predict the time for Mars to orbit the sun.arrow_forward
- Kepler's third law of planetary motion describes a relationship between the__ * a, shape of orbit and the location of the Sun. b. orbital velocity and position in orbit c. distance from the Sun and length of year. d. path of epicycle and position.arrow_forwardWhat is the approximate percentage difference in diameter from Earth to Mars? a. 0.87% b. 1.05% c. 5.24% d. 61.0%arrow_forwardSaturn, as viewed through a telescope, appears as a a. spherical and heavily cratered object. b. bland and nearly featureless disk. c. disk composed of brightly colored belts and bands. d. highly elliptical and bright blue disk.arrow_forward
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