Power in wind is proportional to what power of wind velocity? Second First Fourth Third

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Power in wind is proportional to what power of wind velocity?
Second
First
Fourth
Third
Transcribed Image Text:Power in wind is proportional to what power of wind velocity? Second First Fourth Third
.
Thus, the power per unit area is proportional to the
speed cubed:
P P
=
A
.
Using the density of air: o = 1.204 kg/m³ gives
=
P
= (0.602 kg/m³)v³
When wind speed doubles, the power available
increases by a factor of 8!!
Figure 10.10: Cubic parcel of air with dimensions dxdxd traveling with
velocity and passing through a plane parallel to one of its faces.
Transcribed Image Text:. Thus, the power per unit area is proportional to the speed cubed: P P = A . Using the density of air: o = 1.204 kg/m³ gives = P = (0.602 kg/m³)v³ When wind speed doubles, the power available increases by a factor of 8!! Figure 10.10: Cubic parcel of air with dimensions dxdxd traveling with velocity and passing through a plane parallel to one of its faces.
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