College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 21P
At a distance N × RE from the earth’s surface, where N is an integer, the gravitational force on an object is only 1/25 of its value at the earth’s surface. What is N?
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A satellite is orbiting Earth at a distance D from the surface of the Earth. The radius of
the Earth is RE, the mass of the Earth is MẸ and the mass of the satellite is Ms. Write an
equation representing the magnitude of the gravitational force acting between the
satellite and the Earth.
Newton’s version of Kepler’s third law is P2 = 4 π2 / [G (M1 + M2)] · a3, where G is the gravitational constant, which is equal to 6.67*10-11 m3 kg-1 s-2. NASA's New Horizons mission found that Pluto's moon Charon orbits Pluto every 5.3 days at an average distance of 20400.0 km. What is the combined mass (in kg) of Pluto and Charon?
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Earth's center. The radius of the Earth is 6.4 · 106 m, its mass is 6 · 10²4 kg, and in these
units the gravitational constant, G, is 6.67. 10-¹¹.
Work =
(include help (units); for this problem assume all given constants are accurate to many
significant figures.)
Chapter 6 Solutions
College Physics (10th Edition)
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