The average work done by a human heat while it beats once is `0.5 J`. Calculate the power used by heat if it beats `72` times in a minute.

Options

A. 0.6 w
B. 0.8 w
C. 6 w
D. 8 w

Answer

A

Explanation

Given, average work done by a human
Heart per beat `= 0.5 J`
Total work done during `72` beats
=`72 xx 0.5 J = 36 J`
`power = ("work done")/("Time") = (36 J)/(60 s) = 0.6 W`.