uTo... 49 Which of these facts about planets is false? The planets all orbit the sun in the same direction (counter clockwise as viewed A from.above earth's north pole) The terrestrial planets are characterized by high densities, moderate atmospheres, slow rotation rates, and few or no moons. The jovian planets have low densities, thick atmospheres, rapid rotation rates, and many moons. C Each planet is relatively isolated in space The orbits of the planets are nearly circular Most planets rotate on their axis in roughly the same sense as the sun. Exceptions are Mercury and Uranus. W

uTo... 49 Which of these facts about planets is false? The planets all orbit the sun in the same direction (counter clockwise as viewed A from.above earth's north pole) The terrestrial planets are characterized by high densities, moderate atmospheres, slow rotation rates, and few or no moons. The jovian planets have low densities, thick atmospheres, rapid rotation rates, and many moons. C Each planet is relatively isolated in space The orbits of the planets are nearly circular Most planets rotate on their axis in roughly the same sense as the sun. Exceptions are Mercury and Uranus. W

The Solar System

9th Edition

ISBN:9781305804562

Author:Seeds

Publisher:Seeds

Chapter16: Meteorites, Asteroids, And Comets

Section: Chapter Questions

Problem 1DQ

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Similar questions

What does the term differentiated mean when applied to a planet? Would you expect to find that planets are usually differentiated? Why?
If you lived on Mars, which planets would describe retrograde loops? Which would never be visible as crescent phases?
9 The discovery of Eris A Was not surprising, because the existence of a massive "Planet X" had been predicted nearly a century ago. B Was surprising, due to its "backwards" orbit around the Sun. C Was surprising, since we thought we knew about all large objects in the solar system. Was not surprising, because other Kuiper belt objects approaching the size of Pluto had already been discovered. D
3. Two planets with the same diameter are close to each other, as shown. One planet has twice the mass as the other planet. (a) At which locations would both planets' gravitational force pull on you in the same direction? (b) Where would you stand so that the force of gravity acting 1 p on you is a maximum? * A D 2m т O 1. (a) A and B (b) D O 2 (a) A and C (b) A O 3 (a) A and D (b) A 4 (a) B and C (b) D O 5 (a) A and D (b) D
217% ab (See #4 for Earth mass and radus 5. A satellite has an orbital radius 100 km above the Earth's surface. a. What is the speed of the satellite? b. How many minutes does it take the sātellite to complete one orbit?
19 A planet is detected via the Doppler technique. The velocity change of the star is a measure of A The planet's size and density. B C D E The planet's mass and orbital distance. The planet's orbital period and eccentricity. The planet's mass and composition. The planet's size and orbital distance.
Suppose you're in a circular orbit around Saturn (M = 5.683 x 1026 kg) with a semi-major axis of a = 237,948 km. a. What is your orbital velocity? b. Using the "Vis-viva" equation (which can be derived from the total energy) v = GM What is the delta-V you would need to get from your current orbit, into an elliptical orbit that has an apoapsis near Titan (a = 1,221,870 km)?
9. Pluto's orbit around the Sun is highly elliptical compared to the planets in our Solar System. It has a perihelion distance of 29.7 AU and an aphelion distance of 49.5 AU. a) What is the semi-major axis of Pluto's orbit, in AU? b) What is Pluto's orbital period, in Earth years?
8) When falling through the Martian atmosphere on its parachute (21.5m in diameter, making a circle of 363 m²), Perseverance (1025kg, or 3800N in Martian gravity of 3.71m/s?) fell at about 90 m/s once it had slowed as much as it was going to slow. The thin atmosphere is only about 15g/m² (compared to 1290g/m² for Earth), so a parachute was never going to be enough on its own, hence rockets being used for the last bit of arrival. What was the drag coefficient of the parachute?
13. The diagrams represent Saturn and one of its moons, Titan. Which diagram shows the distance between the two points that should be used to calculate the gravitational attraction between Saturn and Titan?
Which of the following is true in our solar system? 1. The planets travel in a circular path, with the sun being in the very center. 2. The planets travel in an elliptical path, with the sun being in the very center. 3. The planets travel in an elliptical path, with the sun at one of the focus points. 4. The planets travel in a helical path, with the sun located along the central axis.
Two planets are orbiting a star. Planet A is three times as far away from the star as Planet B, but the gravitational force acting on each planet is the same. How many times more massive is Planet A than Planet B? Group of answer choices A Six times as massive B. Three times as massive C. Four times as massive D. Nine times as massive E. Twice as massive F. None of the above