Question -
Answer -
(a)Radius of the artery, r =2 × 10–3 m
Diameter of the artery, d = 2 × 2 × 10–3 m= 4 × 10– 3 m
Viscosity of blood, 
Density of blood, ρ = 1.06 × 103 kg/m3
Reynolds’ number for laminar flow, NR =2000
The largest average velocity of blood is given by the relation:
Therefore, the largest average velocity of blood is 0.983 m/s.
(b) Flow rate is given by therelation:
R = π r2 
Therefore, the corresponding flow rate is
.