
#1
Nov210, 11:09 AM

P: 37

1. The problem statement, all variables and given/known data
What is the blook pressure difference required to make blood flow thru a capillary of radius 3.0 um and length 1.1 mm at a rate of 0.56 mm/s? 2. Relevant equations P1  P2 = ave speed (8nL) /r squared 3. The attempt at a solution n of blood = 4 x 10 e3 m/s ave speed = 5.6 x 10e4 m/s r = 3.0 um = 3 x 10e6 m l = 1.1 mm = 1.1 x 10e3 m P1P2 = 5.6 x 10e4 * 8 * 4 x 10e3 * 1.1 x 10e3/(3 x 10e6)squared P1P2 = 21.90 x 10e2 or 2190 Pa This seems high? Are my logic and math correct? 


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