15. The following plot shows the speed v(r) at which stars orbit about the center of a galaxy, as a function of their distance r from the center. v(r) T Assuming the galaxy has a spherically symmetric mass distribution, which plot best shows the mass of the galaxy M(r) enclosed within radius r?
15. The following plot shows the speed v(r) at which stars orbit about the center of a galaxy, as a function of their distance r from the center. v(r) T Assuming the galaxy has a spherically symmetric mass distribution, which plot best shows the mass of the galaxy M(r) enclosed within radius r?
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Transcribed Image Text:15. The following plot shows the speed v(r) at which stars orbit about the center of a galaxy, as a function
of their distance r from the center.
v(r)
Assuming the galaxy has a spherically symmetric mass distribution, which plot best shows the mass of
the galaxy M(r) enclosed within radius r?
Transcribed Image Text:M(r)
(B)
EK
M(r)
(E)
(A)
(D)
M(r)
M(r)
(C)
M(r)
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