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symbo symbo
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Posts: 1970
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7 years ago
Which parameter representing the motion of the material in the spiral arm of a galaxy is approximately constant and should lead to spiral structure in a galaxy?
A)   The linear velocity
B)   The inverse of the linear velocity
C)   The rotational period around the galactic center
D)   The product (velocity)2  × (distance to galactic center), following a law equivalent to Kepler's third law for the planets
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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papachulopapachulo
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7 years ago
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symbo Author
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7 years ago
Very informative, I appreciate the extra effort
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