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Author Question: The Milky Way is considered to be an intermediately wound, barred spiral, which would be type ... (Read 14 times)

tuffie

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on: Jul 27, 2018
The Milky Way is considered to be an intermediately wound, barred spiral, which would be type ________, according to Hubble.
 
  A) SBb B) B2S C) Sa D) E4 E) SBV

Question 2

The satellite Amalthea orbits Jupiter at just about the same distance in kilometers at which Mimas orbits Saturn. Yet Mimas takes almost twice as long to orbit.
 
  What can you deduce from this difference qualitatively? Since Jupiter and Saturn are not very different in radius, what else can you conclude?


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tjayeee

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

The gravitational attraction of Saturn on Mimas is less than that of Jupiter on Amalthea; therefore, Saturn's mass must be less than Jupiter's. If Saturn is less massive but almost as large as Jupiter, its density must be lower.


tuffie

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Reply 2 on: Jul 27, 2018
Gracias!

sarah_brady415

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Reply 3 on: Yesterday
:D TYSM

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