Answer with Step-by-step explanation:
We are given
Volume of blood=V=7500 L=[tex]7500\times 0.001=7.5 m^3[/tex]
1 liter=[tex]0.001 m^3[/tex]
Height of person=h=1.5 m
Density of blood,[tex]\rho=1050 kg/m^3[/tex]
We have to find the work done and power of person's heart.
We know that
Work done,[tex]W=mgh=\rho Vgh[/tex]
Where [tex]g=9.8 m/s^2[/tex]
Using the formula
[tex]W=1050\times 7.5\times 9.8\times 1.5=1.16\times 10^5 J[/tex]
Time,t=1 day=[tex]24\times 60\times 60=86400 s[/tex]
Power, P=[tex]\frac{W}{t}[/tex]
Using the formula
[tex]P=\frac{1.16\times 10^5}{86400}=1.34 Watt[/tex]
