The Quantity Called the "Enclosed Mass" M(<r)represents ALL of the Mass

question 30

Multiple Choice

The quantity called the "enclosed mass" M(<r) represents ALL of the mass inside radius r. If the enclosed mass M(<r) is constant with increasing radius, where is the mass?

• A)concentrated in the center
• B)distributed in the shape of a doughnut, with a hole in the center
• C)spread out over a large volume
• D)impossible to say

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