Question

An artificial heart valve was tested for its ability to function under extreme conditions, to a maximum flow rate of 4.00 x 10-4 m3/s. What speed would this correspond to for an average red blood cell within a blood vessel of cross-sectional area 5.00 x 10-6 m2?

Answer 1

80 m/s

Step-by-step explanation:

Rate of flow of blood, Volume per second = 4 x 10^-4 m^3/s

Area of blood vessel, A = 5 x 10^-6 m^2

So, Volume per second = area x velocity of blood

velocity of blood = (4 x 10^-4) / (5 x 10^-6) = 80 m/s

The speed of blood is 80 m/s.