Class Management Help 12HW: Fluid Dynamics Begin Date: 11/8/2017 11:59:00 PM --
ID: 1782422 • Letter: C
Question
Class Management Help 12HW: Fluid Dynamics Begin Date: 11/8/2017 11:59:00 PM -- Due Date: 11/15/2017 11:59:00 PM End Date: 11/17/2017 11:59:00 (10%) Problem 8: During a marathon race, a runner's blood flow increases to 12 times her resting rate. Her blood's viscosity has dropped to 93 % of its normal value, and the blood pressure difference across the circulatory system has increased by 51.5 %. Randomized Variables x12 times P1=93 % P2 = 51 % By what percent has the average radii of her blood vessels increased? Grad Dedu Poten r= 0.611 select part sinO cosO asin) 7 8 9 HOME Subn Atten acos) sinh0 cotan a detail atan() acotan) coshOtanh) cotanh0 0 END Degrees Radians O BACKS CLEAR Submit Hint I give up! Hints: 5% deduction per hint. Hints remaining: 5 Feedback: 5% deduction per feedbackExplanation / Answer
delta(P) = 8 mu L Q / pi R^4
delta(P') = 1.515 delta(P)
mu' = 0.93 mu
Q' = 12 Q
R^4 = 8 mu L Q / pi delta(P)
R'^4 = 12 x 0.93 / 1.515 (R^4)
R' = 1.647 R
(R' - R / R) x 100 = 64.7 %