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? a. 2.00 x 10-9 m/s b. 1.25 x 10-2 m/s c. 4.05 x 10-4 m/s d. 8.00 x 101 m/s'
