Poiseuille's law remains valid as long as the fluid flow is laminar. for sufficiently high speed, however, the flow becomes turbulent, even if the fluid is moving through a smooth pipe with no restrictions. it is found experimentally that the flow is laminar as long as the reynolds number re is less than about 2000: re = 2v normal 0 false false false in x-none x-none 4 ρr normal 0 false false false in x-none x-none 4 /η. here normal 0 false false false in x-none x-none 4 v, ρ, and η are, respectively, the average speed, density, and viscosity of fluid, and r is the radius of the pipe. calculate the highest average speed that blood (ρ = 1060 kg/m3, η = 4.0 x 10-3 pa. s) could have and still remain in laminar flow when it flows through the aorta (r = 8.0 x 10-3 m)normal 0 false false false
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Physics, 21.06.2019 21:00, josebienka
Amarble, a bowling ball, a basketball, and a baseball are rolling across the floor at 10 m/s. which one has the greatest kinetic energy? the marble the bowling ball the basketball the baseball
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Physics, 22.06.2019 00:30, powberier6979
Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.
Answers: 2
Physics, 23.06.2019 00:30, Tanya120
Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.
Answers: 3
Poiseuille's law remains valid as long as the fluid flow is laminar. for sufficiently high speed, ho...
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