The virial theorem states that the total kinetic energy of the objects in a
spherical, self-gravitating, stable assembly is equal to negative 1/2 times the total gravitational potential energy, if the objects can be assumed to have equal masses.
... density of the community is 18 inhabitants per km².
External links
Ludvika (http://www.ludvika.se) - Official site
Municipalities of Dalarna[?]:
Avesta ...