Aballet dancer spins with 2.4 rev/s with her arms outstretched, when the moment of inertia about axis of rotation is 1 .with her arms folded, the moment of inertia about the same axis becomes 0.61 . calculate the new rate of spin.

What is the name for the remnant of an asymptotic giant that has lost its shells? black dwarf white dwarf yellow giant black hole

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Match each scenario to the form of energy it represents