Question

David’s pulse is 80 beats per minute what is the frequency of his pulse in beats per second and how long does it take between heart beats

Answer 1

Answer:

1.333 beats/s

It takes 0,755 s per beat

Explanation:

If we want to convert this frequency from beats per minute to beats per second, we have to do the following:

$80\frac{beats}{min} \frac{1min}{60s}=1.333\frac{beats}{s}$

This means that in 1 second David has 1.333 heart beats.

Now, if we want to know how long does it take between heart beats, we can use the mathematical Rule of Three:

1.333 beats ---- 1s

1 beat ------ ?

$?=\frac{(1 beat)(1s)}{1.333 beats}$

$?=0.75 s$ This means there are 0.75 s between heart beats