The tape in a videotape cassette has a total length 240 m and can play for 2.1 h. as the tape starts to play, the full reel has an outer radius of 47 mm and an inner radius of 11 mm. at some point during the play, both reels will have the same angular speed. what is this common angular speed?

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