World class swimmers can swim the 100 meter freestyle in about 55 seconds. What is their approximate average speed? A. 0.55 m/s B. 1.91 m/s C. 1.82 m/s 1.82,5m/s O D. 1.67 m/s​

Why does lightning travel from clouds to the ground?

Find the mass by adding the numbers from the three sliders

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