In researching alternate energies, you find that wind power is calculated by the following equation:
where
- P = power [watts]
- A = sweep area (circular) of the blades [square meters]
- ρ = air density [kilograms per cubic meter]
- υ = velocity [meters per second]
The specific gravity of air is 0.00123 and the velocity is typically 35 meters per second. Create a graph of the theoretical power (P, in units of watts) as a function of the blade diameter (D, in units of meters). Allow the diameter to be graphed on the abscissa and vary from 0.5 to 1.5 meters.
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