21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
6th Edition
ISBN: 9780393874921
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 7, Problem 34QP
To determine
The ratio of Venus’s spin total
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Uranus has a mass of 8.68 x 1025 kg and a radius of 2.56 x 10 m. Assume it is a uniform solid sphere. The distance of Uranus from the Sun is 2.87 x 10¹2 m. (Assume Uranus completes a single
rotation in 17.3 hours and orbits the Sun once every 3.08 x 104 Earth days.)
(a) What is the rotational kinetic energy of Uranus on its axis?
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(b) What is the rotational kinetic energy of Uranus in its orbit around the Sun?
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Titan completes one orbit about Saturn in 15.9 days and the average Saturn-Titan distance is 1.22 x 10° m.
Calculate the angular speed o of Titan as it orbits Saturn.
rad/s
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(a)What is the period of rotation of Neptune in seconds? (The period of rotation of Neptune in hours is 16.1 hr.)
(b)What is the angular velocity (in rad/s) of Neptune? (Enter the magnitude.)
(c)Given that Neptune has a radius of 2.5 ✕ 107 m at its equator, what is the linear velocity (in m/s) at Neptune's surface? (Enter the magnitude of the linear velocity at the equator.)
Chapter 7 Solutions
21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
Ch. 7.1 - Prob. 7.1CYUCh. 7.2 - Prob. 7.2CYUCh. 7.3 - Prob. 7.3CYUCh. 7.4 - Prob. 7.4CYUCh. 7.5 - Prob. 7.5CYUCh. 7 - Prob. 1QPCh. 7 - Prob. 2QPCh. 7 - Prob. 3QPCh. 7 - Prob. 4QPCh. 7 - Prob. 5QP
Ch. 7 - Prob. 6QPCh. 7 - Prob. 7QPCh. 7 - Prob. 8QPCh. 7 - Prob. 9QPCh. 7 - Prob. 10QPCh. 7 - Prob. 11QPCh. 7 - Prob. 12QPCh. 7 - Prob. 13QPCh. 7 - Prob. 14QPCh. 7 - Prob. 15QPCh. 7 - Prob. 16QPCh. 7 - Prob. 17QPCh. 7 - Prob. 18QPCh. 7 - Prob. 19QPCh. 7 - Prob. 20QPCh. 7 - Prob. 21QPCh. 7 - Prob. 22QPCh. 7 - Prob. 23QPCh. 7 - Prob. 24QPCh. 7 - Prob. 25QPCh. 7 - Prob. 26QPCh. 7 - Prob. 27QPCh. 7 - Prob. 28QPCh. 7 - Prob. 29QPCh. 7 - Prob. 30QPCh. 7 - Prob. 31QPCh. 7 - Prob. 32QPCh. 7 - Prob. 33QPCh. 7 - Prob. 34QPCh. 7 - Prob. 35QPCh. 7 - Prob. 36QPCh. 7 - Prob. 37QPCh. 7 - Prob. 38QPCh. 7 - Prob. 39QPCh. 7 - Prob. 40QPCh. 7 - Prob. 41QPCh. 7 - Prob. 42QPCh. 7 - Prob. 43QPCh. 7 - Prob. 44QPCh. 7 - Prob. 45QP
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- The centrifuge at NASA Ames Research Center has a radius of 8.8 m and can produce farces on its payload of 20 gs or 20 times the force of gravity on Earth. (a) What is the angular momentum of a 20-kg payload that experiences 10 gs in the centrifuge? (b) If the driver motor was turned off in (a) and the payload lost 10 kg, what would be its new spin rate, taking into account there are no frictional forces present?arrow_forwardThe axis of Earth makes a 23.5 angle with a direction perpendicular to the plane of Earth’s orbit. As shown below, this axis precesses, making one complete rotation in 25,780 y. (a) Calculate the change in angular momentum in half this time. (b) What is the average torque producing this change in angular momentum? (c) If this torque were created by a pair of forces acting at the most effective point on the equator, what would the magnitude of each force be?arrow_forwardConsider a star orbited by two planets. Assume the star to have mass twice that of the Sun. Let planet 1 orbit with semi-major axis 10 AU, and eccentricity 0.6. Planet 2 orbits with semi-major axis 4 AU, and eccentricity 0. Assume the angular momentum vectors of the two planets to point in the same direction. Both planets have a mass of 1 Earth-mass. Let's assume these planets have a collision. a. At which point in its orbit must planet 1 be, at the time of collision? b. Assume the two planets stick together in the collision forming a planet with a mass of two earth-masses. What is the angular momentum and orbital energy (kinetic + potential) of the resulting planet? c. What are the semi-major axis and eccentricity of the orbit of the resulting planet?arrow_forward
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