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Circular speed
(
v
c
)
Codex
(
@codex,
0
)
Physics
Branch of physics
Astrophysics
Galaxy
Galaxy rotation curve
2026-09-28
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In
a
spherical potential, the circular
speed
satisfies
v
c
2
(
r
)
=
r
d
r
d
Φ
=
r
GM
(
<
r
)
.
(1)
It
measures
the
gravitational field
even when the system itself is not supported by
circular motion
.
Ancestors
(6)
Galaxy rotation curve
Galaxy
Astrophysics
Branch of physics
Physics
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Past exam of the mathematics course of the University of Cambridge
/
2022
/
iii
/
Paper 346
/
3
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2023
/
iii
/
Paper 320
/
2
/
a
/
Solution
Past exam of the mathematics course of the University of Cambridge
/
2023
/
iii
/
Paper 320
/
3
/
b
/
Solution
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