A uniform sphere of radius r rotates about a diameter with an angular momentum of magnitude l. Under the action of internal forces the sphere collapses to a uniform sphere of radius r/2. The magnitude of its new angular momentum is:.

What are the two main ideas of this passage? museum experts feel that museums must change to attract visitors. museum experts care more about the number of visitors than about history. museums that display artworks and exhibits do not make families welcome. museums like colonial williamsburg make learning about the past fun. museums in the united states are different than in other countries.