Question

The heart does 1.5J of work in each heartbeat .How many times per minute does it beat if its power is 2 watt

Answer 1

Answer:

45

Explanation:

power=work/time

t=3/4

multiply by60

Answer 2

P=W/T

So, 2=1.5/t

so t=15/20 Seconds

it means 3/4 s

Now conversion will give

3/4 ×1/60 = 3/240 mins.

1/80 mins