[0/2 Points] DETAILS PREVIOUS ANSWERS SERCPWA11 9.WA.061. MY NOTES Plaque builds up on the walls of an artery decreasing its diameter from 1.16 cm to 0.66 cm. If the flow speed is 15.5 cm/s before reaching the region of plaque buildup, determine the following. (a) speed at which blood is traveling through the plaque-constricted region 0.4633 X See if you can adapt the equation of continuity to this situation. cm/s -100.88 (b) pressure change within the plaque-constricted region. (Assume the density of blood is 1050 kg/m'. Be sure to include the appropriate sign with your answer.) X See if you can adapt Bernoulli's Equation to this situation. What would a positiveegative sign on the pressure difference tell us? Pa 7. [1/1 Points] DETAILS PREVIOUS ANSWERS SERCPWA11 9.WA.047. MY NOTES The aorta carries blood away from the heart and eventually branches into a large number of capillaries that distribute the blood to various body organs. If for an average person, the aorta has a rad travels through it at a speed of 36 cm/s and the capillaries have an average radius of 5.0 x 10" cm and blood travels through them at a speed of 0.007 cm/s, determine the approximate number body. 2.96e 10 capillaries PREVIOUS ANSWERS SERCPWA11 9.WA.042. MY NOTES 8. [2/2 Points] DETAILS (a) Blood with a density p = 1.00 g/cm is flowing with a speed of 25 cm/s through an aorta with a cross-sectional area of 2.2 cm2. Determine the mass flow rate (in g/s) of blood. 55 9/s (b) If this aorta branches to a number of capillaries which have a combined cross-sectional area of 2.6 x 105 cm2, determine the flow speed (in cm/s) of the blood in the capillaries. 0.021 cm/s MY NOTES PR 9. [1/1 Points] DETAILS PREVIOUS ANSWERS SERCPWA11 9.WA.044. A standard after-surgery intravenous fluid has a density of 1125 kg/m. If during the first six hours after surgery a patient is to receive a volume of 1.05 x 10-3 m' of this fluid, determine the mass flo MacBook Airur last submission is used for your score. 1. [0/1 Points] DETAILS PREVIOUS ANSWERS SERCPWA11 9.WA.076. MY NOTES PRACTICE ANOTHER Angioplasty is a technique in which arteries partially blocked with plaque are dilated to increase blood flow. By what factor must the radius of an artery be increased in order to increase blood flow by a factor of 4, assuming no change in pressure difference? If = 2 X See if you can find an expression which relates the volume flow rate of a fluid to the radius of the conduit for that fluid. 2. [-/1 Points] DETAILS SERCPWA11 9.WA.077. MY NOTES PRACTICE ANOTHER When physicians diagnose arterial blockages, they quote the reduction in flow rate. If the flow rate in an artery has been reduced to 14.3% of its normal value by a blood clot and the average pressure difference has increased by 32.0%, by what factor has the clot reduced the radius, ro, of the artery? r = ro SERCPWA11 9.WA.084. MY NOTES PRACTICE ANOTHER 3. [-/1 Points] DETAILS Turbulence in the aorta is a certainty for a Reynolds number of 3000. Assuming that blood is an ideal fluid, calculate the average flow rate for this Reynolds number if the diameter of the aorta is 1.55 cm. Use 1.05 x 103 kg/m3 as the density and 2.084 x 10-3 (N/m2) . s as the viscosity of blood. m 3 / s MY NOTES PRACTICE ANOTHER 4. [-/1 Points] DETAILS SERCPWA11 9.WA.053. A veterinarian uses a hypodermic syringe like the one shown in the figure to inject a horse with a medical solution with a density that is the same as water. The barrel of the syringe has a cross-sectional area of 2.53 x 10" nitude MacBook Air DD 20 F9 F10 F11 F12 E8 esc F4 F6 F1 F3 F5 F7 F2 % & # 8 9 O 5