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1) The Solar and Sidereal days difer from each other by about 4 minutes. How much distance, relative to the Sun and...
3a. A planet that keeps the same hemisphere pointed towards the Sun must rotate once per...
3a. A planet that keeps the same hemisphere pointed towards the Sun must rotate once per orbit in the prograde direction. Draw a diagram to demonstrate this fact. The rotational period in an inertial frame, the sidereal day, for such a planet is equal to the orbital period, the length of the solar day on such a planet is infinite (this is known as being tidally locked). b. If a planet rotated once per orbit in the retrograde direction, how...
3a. A planet that keeps the same hemisphere pointed towards the Sun must rotate once per...
3a. A planet that keeps the same hemisphere pointed towards the Sun must rotate once per orbit in the prograde direction. Draw a diagram to demonstrate this fact. The rotational period in an inertial frame, the sidereal day, for such a planet is equal to the orbital period, the length of the solar day on such a planet is infinite (this is known as being tidally locked). b. If a planet rotated once per orbit in the retrograde direction, how...
D) Accepting an hypothesis doesn't require experiment. 18. Most ancient cultures made A) unorganized observations of...
D) Accepting an hypothesis doesn't require experiment. 18. Most ancient cultures made A) unorganized observations of the sky. B) no observations of the sky C) organized observations of the sky. D) more news about the sky. 19. The sidereal day is the time it takes the Earth A) to rotate since before it starts rotating. B) to rotate relative to the Sun. C) to rotate around the Sun D) to rotate relative to the back ground stars. 20. The ecliptic...
The Apparent Motion of the Surn The sun rises in the east, moves across the south,...
The Apparent Motion of the Surn The sun rises in the east, moves across the south, and sets in the west much as stars in non-circumpolar constellations do. Just as for the stars, this apparent motion is really due to the rotation of the earth on its axis The Earth's motion around the Sun adds a complication to the Sun's apparent motion. In a full year, or 365 days, the Earth would go completely around the Sun so that the...
Question 28 1 pts The greatest inaccuracy in Copernicus' model of the solar system was that...
Question 28 1 pts The greatest inaccuracy in Copernicus' model of the solar system was that the planets O traveled on epicycles whose centers followed orbits around the Earth O travel in circular orbits with uniform motion. traveled in elliptical orbits. O were allowed to travel backwards in their orbits Question 29 1 pts Kepler's third law can be expressed mathematically as: O P-A P3-A2 О p2.A3 Question 30 1 pts Johannes Kepler obtained accurate data on the positions of...
Today, the Moon’s orbit around Earth has a semi-major axis of a=384,400 km and an orbital...
Today, the Moon’s orbit around
Earth has a semi-major axis of a=384,400 km and an orbital period
of 27.32166 days.
a. The Moon slowly moves outward due to tidal braking of the
Earth’s rotation, and at some future date the Moon will have an
orbital period of 47 days. Compute the semi-major axis of the
Moon’s orbit at this future date (express your answer in
kilometers).
semi-major axis = 5.5*10^5 km
b. Today, the Moon has an angular diameter of...
Question 7 (0.5 points) What causes the Moon to move about 12° across the sky from...
Question 7 (0.5 points) What causes the Moon to move about 12° across the sky from one night to the next (at the same time of night, of course)? O Because the Earth is turning on its axis. O Because the Moon is moving in its orbit. The Sun has also moved 15° across the sky and gravitationally pulls the Moon with it. The celestial sphere the Moon is attached to has moved 15°. O It is an optical illusion....
se 4: Phases of the Moon Everyone has seen the Moon, which is a natural satellite...
se 4: Phases of the Moon Everyone has seen the Moon, which is a natural satellite that orbits the Earth. As the Moon rotates around the Earth it is exposed to various amounts of light from the Sun. The reason for this is simple, the Moon at night because it is reflecting light produced by the Sun and because the Earth is slightly out of the direct line of sight between the Moon and Sun. If it were not, a...
Table 13.1 Solar system data (in SI units and relative to Earth) Orbit eccentricity Mass Equatorial...
Table 13.1 Solar system data (in SI units and relative to Earth) Orbit eccentricity Mass Equatorial radius semimajor axis period (a^) (years) 30 Sun 2.0 X 10 3.3 × 10 Mercury 3.30 X 1023 Venus 4.87 X 1024 Earth Mars Jupiter 1.90 x 1027318 Saturn 5.68 × 1026 95.2 Uranus 8.68 X 1014.5 Neptune 1.02 x 102617.1 Pluto 2.440 ×106 6.052 X 106 6.378 X 106 3.396 × 106 5.79×1010 1.082 x 1011 1.496 × 1011 2.279 ×1011 11.2 7.783...
3a. A planet that keeps the same hemisphere pointed towards the Sun must rotate once per orbit in the prograde direction. Draw a diagram to demonstrate this fact. The rotational period in an inertial frame, the sidereal day, for such a planet is equal to the orbital period, the length of the solar day on such a planet is infinite (this is known as being tidally locked). b. If a planet rotated once per orbit in the retrograde direction, how...
3a. A planet that keeps the same hemisphere pointed towards the Sun must rotate once per orbit in the prograde direction. Draw a diagram to demonstrate this fact. The rotational period in an inertial frame, the sidereal day, for such a planet is equal to the orbital period, the length of the solar day on such a planet is infinite (this is known as being tidally locked). b. If a planet rotated once per orbit in the retrograde direction, how...
D) Accepting an hypothesis doesn't require experiment. 18. Most ancient cultures made A) unorganized observations of the sky. B) no observations of the sky C) organized observations of the sky. D) more news about the sky. 19. The sidereal day is the time it takes the Earth A) to rotate since before it starts rotating. B) to rotate relative to the Sun. C) to rotate around the Sun D) to rotate relative to the back ground stars. 20. The ecliptic...
The Apparent Motion of the Surn The sun rises in the east, moves across the south, and sets in the west much as stars in non-circumpolar constellations do. Just as for the stars, this apparent motion is really due to the rotation of the earth on its axis The Earth's motion around the Sun adds a complication to the Sun's apparent motion. In a full year, or 365 days, the Earth would go completely around the Sun so that the...
Question 28 1 pts The greatest inaccuracy in Copernicus' model of the solar system was that the planets O traveled on epicycles whose centers followed orbits around the Earth O travel in circular orbits with uniform motion. traveled in elliptical orbits. O were allowed to travel backwards in their orbits Question 29 1 pts Kepler's third law can be expressed mathematically as: O P-A P3-A2 О p2.A3 Question 30 1 pts Johannes Kepler obtained accurate data on the positions of...
Today, the Moon’s orbit around
Earth has a semi-major axis of a=384,400 km and an orbital period
of 27.32166 days.
a. The Moon slowly moves outward due to tidal braking of the
Earth’s rotation, and at some future date the Moon will have an
orbital period of 47 days. Compute the semi-major axis of the
Moon’s orbit at this future date (express your answer in
kilometers).
semi-major axis = 5.5*10^5 km
b. Today, the Moon has an angular diameter of...
Question 7 (0.5 points) What causes the Moon to move about 12° across the sky from one night to the next (at the same time of night, of course)? O Because the Earth is turning on its axis. O Because the Moon is moving in its orbit. The Sun has also moved 15° across the sky and gravitationally pulls the Moon with it. The celestial sphere the Moon is attached to has moved 15°. O It is an optical illusion....
se 4: Phases of the Moon Everyone has seen the Moon, which is a natural satellite that orbits the Earth. As the Moon rotates around the Earth it is exposed to various amounts of light from the Sun. The reason for this is simple, the Moon at night because it is reflecting light produced by the Sun and because the Earth is slightly out of the direct line of sight between the Moon and Sun. If it were not, a...
Table 13.1 Solar system data (in SI units and relative to Earth) Orbit eccentricity Mass Equatorial radius semimajor axis period (a^) (years) 30 Sun 2.0 X 10 3.3 × 10 Mercury 3.30 X 1023 Venus 4.87 X 1024 Earth Mars Jupiter 1.90 x 1027318 Saturn 5.68 × 1026 95.2 Uranus 8.68 X 1014.5 Neptune 1.02 x 102617.1 Pluto 2.440 ×106 6.052 X 106 6.378 X 106 3.396 × 106 5.79×1010 1.082 x 1011 1.496 × 1011 2.279 ×1011 11.2 7.783...
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