Question

The lungs perform 2.4 j of work during each expansion. the number of times per minute do they expand if their power is 2W​

Answer 1

Answer:

P = 2 j/s

work done during expansion = 2.4 j ( W ) 

t = 1 minute = 60 seconds

P = \frac{W}{t}P=tW

   W = P * t

       = 2 * 60 = 120 J

total no. of expansion per minute = 120 / 2.4 = 50