Poiseuille's equation does not hold if the flow velocity is high enough that turbulence sets in. The onset of turbulence occurs when the Reynolds number, Re , exceeds approximately 2000. Re is defined asRe=2v¯rrhoη , where v¯ is the average speed of the fluid, rho is its density, η is its viscosity, and r is the radius of the tube in which the fluid is flowing.1. Calculate the Reynolds number and determine if blood flow through the aorta is laminar or turbulent when the average speed of blood in the aorta (r = 0.74 cm ) during the resting part of the heart's cycle is about 39 cm/s .2. During exercise, the blood-flow speed approximately doubles. Calculate the Reynolds number in this case, and determine if the flow is laminar or turbulent.

the answer would be 32*f

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

the maxium height is 34m/s

explanation:

wheres the pic