Question
Asked Aug 28, 2019
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Not sure what I am doing wrong here...

 

 

A typical person has an average heart rate of 74.0 beats/min. Calculate the given questions. How many beats does she have in
5.0 years? How many beats in 5.00 years? And finally, how many beats in 5.000 years? Pay close attention to significant
figures in this question
5.0 years
3.9 х107
beats
3.89 x107
5.00 years
beats
5.000 years
3.89 x107
beats
Question Credit: OpenStax College Physics
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A typical person has an average heart rate of 74.0 beats/min. Calculate the given questions. How many beats does she have in 5.0 years? How many beats in 5.00 years? And finally, how many beats in 5.000 years? Pay close attention to significant figures in this question 5.0 years 3.9 х107 beats 3.89 x107 5.00 years beats 5.000 years 3.89 x107 beats Question Credit: OpenStax College Physics

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Expert Answer

Step 1

The average heart rate of a typical person is 74.0 beats/min. the number of beats in 5.0years can be calculated by using the following data as follows:

since

1 hour=60 min

1 day=24 hour

1year=365.25day

use the above data to calculate the number of beats in 5.0years as follows:

since the number of significant figures in 5.0years is only two so the answer will be up to two significant figures.

Result:

therefore the number of beats in 5.0 years is 1.9×108 beats.

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365.25day(5.0year lyear Number of beats=74.0beats 60min )( 24hour min lday 1hour 1.94605x108beats =1.9x108beats

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Step 2

the number of beats in 5.00 years can be calculated as follows:

here, the number of significant figures in 5.00 years is three so the answer will...

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number of beatsa74.0beats60.0min 24hour 365.25day500vears) lhour min lday lyear =1.94605x108beats =1.95x108beats

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