Physics, 13.12.2019 05:31 bobbyhill24
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 rhor 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, rho, 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 (rho = 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 in x-none x-none 4
Answers: 3
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Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?
Answers: 1
Poiseuille's law remains valid as long as the fluid flow is laminar. for sufficiently high speed, ho...
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