Answer
(a) 4.24 cm/s, (b) 0.38 m/s
Work Step by Step
Here we use equation 11.10 $Q=Av$ to find the speed of the blood.
(a) $q=Av=>v=\frac{Q}{A}$ ; Let's plug known values into this equation.
$v=\frac{3.6\times10^{-6}m^{3}/s}{\pi(5.2\times10^{-3}m)^{2}}=4.24\space cm/s$
(b) $q=Av=>v=\frac{Q}{A}$ ; Let's plug known values into this equation.
$v=\frac{3.6\times10^{-6}m^{3}/s}{\pi(\frac{1}{3}\times5.2\times10^{-3}m)^{2}}=0.38\space m/s$
