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August 30, 2014

Homework Help: Science.

Posted by Jeremy on Tuesday, August 21, 2012 at 10:11pm.

Assume a typical hummingbird has a lifespan of 4.0 years and an average heart rate of 1300 beats per minute. (a) Calculate the number of times a hummingbird's heart beats in its life, and express it in scientific notation. Use 365.24 days per year. (b) A long-lived elephant lives for 61 years, and has an average heart rate of 25 beats per minute. Calculate the number of heartbeats in that elephant's lifetime in scientific notation.

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