The average work done by a human heart while it beats once is 0.5 J. Calculate the power used by heart if it beats 74 times in a minute

Explanation

To solve the problem, we need to calculate the power used by the human heart when it beats 74 times in a minute, given that the average work done during each beat is 0.5 J.

### Step-by-Step Solution:

1. **Identify the Work Done per Beat**:
The average work done by the heart in one beat is given as:
\[
W_{\text{per beat}} = 0.5 \, \text{J}
...