Answers
1. Turbulence is directly proportional to Reynold's number, so higher the Reynold's number, higher would be the turbulence.
Order : From Highest Turbulence to lowest .
a.Eagle
b.Dragonfly
c.Great White Shark
d. Sea Lion
e. Dirt Warm
2.
Sea Lion will experience a greater Pressure Drag because the pressure drag is related to the surface area and since characteristic length of Sea Lion is maximum among these, Sea Lion would experience a greater pressure drag.
Eagle will experience a greater frictional drag because frictional drag scales up with the Reynold's number.
3. Drag is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. Drag forces arise from pressure differences over the body (due to its shape) and viscous forces along the surface (in the boundary layer). Pressure Drag arises from the eddying that are set up in the fluid by the passage of the body. VIscous drag comes from the friction between the fluid and the surface over which it is flowing.
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