C14_presentation

C14_presentation - (C14T.6) If global warming proceeds...

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Unformatted text preview: (C14T.6) If global warming proceeds during the 21 st Century as anticipated, it is possible that the polar ice caps will melt, substantially raising sea levels around the world (and flooding coastal cities such as New York). Would this shorten, lengthen, or have strictly no effect on the duration of the day? (Hint: how would the melting of the ice caps affect the earths moment of inertia?) (A) Lengthen the day slightly (B) Shorten the day (C) Have strictly no effect on the length of the day (C14S.3) Two astronauts of roughly equal mass are floating in space. They both hold onto a light rod 20 m long, and the whole system is rotating about the center of the rod roughly once every 30 s. (A) What is the ordinary speed of each astronaut? v v m/s 2.09 rad/rev) s)(2 m)(1rev/30 10 ( = = = r v m m i v i v (B) Now imagine that the astronauts pull themselves along the rod until they are 10 m apart. What is their ordinary speed now?...
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C14_presentation - (C14T.6) If global warming proceeds...

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