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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Find the gravitational force between an object that is 0.500 kg and a space rock that is 2.50 x 1012 kg if they are 20.0 km apart. (G = 6.671 x 10-11 N*m2/kg2 )
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- The densest known element is osmium with a density of ? = 22.4 g/cm3. Suppose two small spheres of osmium with radii 2.80 cm are in contact with each other. Find the gravitational force of attraction between them, given that G = 6.67 ✕ 10−11 N · m2/kg2. Recall that ? = mass volume and Vsphere = 4 3 ?r3.arrow_forwardObjects with masses of 220 kg and 410 kg are separated by 0.415 m. A 58.3 kg mass is placed midway between them. Find the magnitude of the net gravitational force exerted by the two larger masses on the 58.3 kg mass. The value of the universal gravi- tational constant is 6.672 × 10−11 N · m2/kg2. Answer in units of N. Leaving the distance between the 220 kg and the 410 kg masses fixed, at what distance from the 410 kg mass (other than infinitely remote ones) does the 58.3 kg mass experience a net force of zero? Answer in units of m.arrow_forwardThe planet Krypton had a surface gravitational field strength of 13.5 N/kg. a) if Superman weighed 1054N on Krypton, how much would he weigh on Earth? b) if Krypton had a radius of 1.6 x 104 km, what would its mass have been?arrow_forward
- At their closest approach, Venus and Earth are 4.20 x 10 10 m apart. The mass of Venus is 4.87 x 10 × 10 24 point? 24 kg, the mass of Earth is 5.97 kg, and G = 6.67 x 10 -11 N. m 2/kg 2. What is the magnitude of the gravitational force exerted by Venus on Earth at that 6.30 x 1020 N 4.62 x 1028 N 1.10 x 1018 N 1.72 x 1019 N 5.43 x 1026 Narrow_forwardTwo balls, each with a mass of 0.808 kg, exert a gravitational force of 8.49 × 10^−11 N on each other. How far apart are the balls? The value of the universal gravitational constant is 6.673 × 10^−11 N m2/kg2.arrow_forwardOn earths surface, the gravitational field strength is about 9.8 m/s^2. Now consider a different planet with a mass of 5.7 x 10^23 kg with a gravitational field strength at its surface of 4.5 m/s^2. What is the diameter of the planet?arrow_forward
- a) Find the magnitude of the gravitational force (in N) between a planet with mass 7.25 ✕ 1024 kg and its moon, with mass 2.50 ✕ 1022 kg, if the average distance between their centers is 2.70 ✕ 108 m. N (b) What is the moon's acceleration (in m/s2) toward the planet? (Enter the magnitude.) m/s2 (c) What is the planet's acceleration (in m/s2) toward the moon? (Enter the magnitude.) m/s2arrow_forwardThe mean diameters of X and Y, two planets in the same solar system, are 6.5 x 10³ km and 1.2 x 104 km, respectively. The mass of x is 0.21 times the mass of Y. The value of g on Y is 8.1 m/s². (a) What is the ratio of the mean density of X to that of Y (Px / Py)? (b) What is the value of g on X? m/s² (c) The mass of Y is 4.372 x 1024 kg. What is the escape speed on X? m/sarrow_forwardYou are trapped on an earth-like planet with a mass of 5.00×1024 kg and a radius of 4000 km. You were able to build a cannon capable of launching a human. What velocity will you need to escape the planet? (We can simplify the Gravitational Constant G to 6.7x10-11 Nm2/kg)arrow_forward
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