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PHSY218_CHP01_21-30

# PHSY218_CHP01_21-30 - 1.21 Assuming the two-volume edition...

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1.21: Assuming the two-volume edition, there are approximately a thousand pages, and each page has between 500 and a thousand words (counting captions and the smaller print, such as the end-of-chapter exercise and problems), so an estimate for the number of words is about 6 10 . 1.22: Assuming about 10 breaths per minutes, 60 24 × minutes per day, 365 days per year, and a lifespan of fourscore (80) years, the total volume of air breathed in a lifetime is about 3 5 m 10 2 × . This is the volume of a room m 20 m 100 m 100 × × , which is kind of tight for a major-league baseball game, but it’s the same order of magnitude as the volume of the Astrodome. 1.23: This will vary from person to person, but should be of the order of 5 10 1 × . 1.24: With a pulse rate of a bit more than one beat per second, a heart will beat 10 5 times per day. With 365 days in a year and the above lifespan of 80 years, the number of beats in a lifetime is about 9 10 3 × . With 20 1 L (50 cm 3 ) per beat, and about 4 1 gallon per liter, this comes to about 7 10 4 × gallons.

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PHSY218_CHP01_21-30 - 1.21 Assuming the two-volume edition...

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