New answers tagged galactic-dynamics
4
From the virial theorem, peculiar velocities resulting from gravitational processes generally have magnitudes of the order of
$$
V \sim \left(\frac{GM}{R}\right)^{1/2},
$$
where $G$ is the gravitational constant, and $M$ and $R$ are the mass and radius of the system.
Galaxies
Galaxies have peculiar velocities of the order of several 100 km per second; small ...
Top 50 recent answers are included