A hoop rolls with constant velocity and without sliding along level ground. Its rotational kinetic energy is: four times its translational kinetic energy half its translational kinetic energy one-third its translational kinetic energy twice its translational kinetic energy the same as its translational kinetic energy

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is