1) Calculate the speed (in m/s) a spherical rain drop would achieve falling from 3.60 km in...
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1) Calculate the speed (in m/s) a spherical rain drop would achieve falling from 3.60 km in a) the absence of air drag and b) with air drag. Take the size across of the drop to be 8 mm, the density to be 1.00 103 kg/m3, and the surface area to be r2. (Assume the density of air is 1.21 kg/m3.)
The absence of air drag 266 m/s
With air drag:
2) Find the terminal velocity (in m/s) of a spherical bacterium (diameter 1.89 m) falling in water. You will first need to note that the drag force is equal to the weight at terminal velocity. Take the density of the bacterium to be 1.10 103 kg/m3. (Assume the viscosity of water is 1.002 103 kg/(m s).)
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