The gravitational force of attraction between two masses is inversely proportional to the square of the distance between them. Suppose that when a comet is 600 x 103 kms from the earth and receding at 12000 km/sec, the force between the comet and the earth is 3 kN. How fast is the force changing in kN/sec at that instant?a) -0.24b) -0.18c) -0.16d) -0.12

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College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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The gravitational force of attraction between two masses is inversely proportional to the square of the distance between them. Suppose that when a comet is 600 x 10³ kms from the earth and receding at 12000 km/sec, the force between the comet and the earth is 3 kN. How fast is the force changing in kN/sec at that instant?

a) -0.24

b) -0.18

c) -0.16

d) -0.12

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