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It is believed that there are a 1.2 × 1012 comets in the Oort Cloud, which has a radius of 74000.0 AU. What is the total volume of the Oort Cloud in cubic AU?

Astronomy

1st Edition

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Chapter13: Comets And Asteroids: Debris Of The Solar System

Section: Chapter Questions

Problem 14E: Give brief descriptions of both the Kuiper belt and the Oort cloud.

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Question

It is believed that there are a 1.2 × 10¹² comets in the Oort Cloud, which has a radius of 74000.0 AU. What is the total volume of the Oort Cloud in cubic AU?

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$Number of comets in Oort cloud (N) = 1.2 \times 10^{12} Radius of each comet (R) = 74000 A . U$

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