The unexplored planet Alpha Centauri III has a radius of 7.0 ×10^6 m. A visiting astronaut drops a rock, from rest, into a 180-m-deep crevasse. She records that it takes 6.0 s for the rock to reach the bottom. What is the mass of Alpha Centauri III?

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter15: Fluids
Section: Chapter Questions
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The unexplored planet Alpha Centauri III has a radius of 7.0 ×10^6 m. A visiting astronaut drops a rock, from rest, into a 180-m-deep crevasse. She records that it takes 6.0 s for the rock to reach the bottom. What is the mass of Alpha Centauri III?

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