You raise a bucket of water from the bottom of a deep well. if your power output is 138 w , and the mass of the bucket and the water in it is 4.00 kg , with what speed can you raise the bucket? ignore the weight of the rope.

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