627_Physics ProblemsTechnical Physics

627_Physics ProblemsTechnical Physics - P21.68 (a) 00...

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Chapter 21 629 P21.68 (a) 10 000 1 00 6 02 10 334 10 23 26 g mol 18.0 g molecules 1.00 mol molecules bg .. . F H G I K J × F H G I K J (b) After one day, 10 1 of the original molecules would remain. After two days, the fraction would be 10 2 , and so on. After 26 days, only 3 of the original molecules would likely remain, and after 27 days , likely none. (c) The soup is this fraction of the hydrosphere: 10 0 . kg 1.32 10 kg 21 × F H G I K J . Therefore, today’s soup likely contains this fraction of the original molecules. The number of original molecules likely in the pot again today is: 10 0 3 34 10 2 53 10 26 6 . kg molecules molecules 21 × F H G I K J ×= × ej . P21.69 (a) For escape, 1 2 2 mv GmM R = E . Since the free-fall acceleration at the surface is g GM R = E 2 , this can also be written as:
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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