Question
Asked Aug 24, 2019
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An artificial heart must beat an average of 60 beats per minute, and must last at least 30 years. If there are 60 minutes in an hour, 24 hours in each day, and 365.25 days in a year, how many beats must the artificial heart provide in this 30 year period?

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Expert Answer

Step 1

Given,

1year 365.25 day
1day24hours
1hour 60min
Heart beat rate, R = 60beat/min
Life span of heart, L 30 year
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1year 365.25 day 1day24hours 1hour 60min Heart beat rate, R = 60beat/min Life span of heart, L 30 year

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Step 2

Using unit conversion, the total heartbeat in a year can be calculated as,

heart beat in a year
beat60mi
min 1hour
24hour365.25 day
H 60
1day
1Year
beat
H 31557600
year
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heart beat in a year beat60mi min 1hour 24hour365.25 day H 60 1day 1Year beat H 31557600 year

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Step 3

Heartbeat in its 30-y...

beat
H (30year 31557600"
year
= 946728000beat
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beat H (30year 31557600" year = 946728000beat

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