(a)
Energy production in kilowatt-hours of a wind turbine with its diameter 15 feet and wind speed 12 miles per hour
(b)
The increase in the energy production of a wind turbine with 10 feet diameter if wind speed increases from 12 miles per hour to 15 miles per hour.
(c)
The energy produced by a 15 diameter wind turbine at 12 miles per hour is how much more than the energy produced by a 10 diameter wind turbine at 12 miles per hour.
(d)
Which would produce biggest increase in energy production by replacing 10 feet diameter wind turbine at a location with wind speed 12 miles per hour with 15 feet diameter wind turbine at same location or moving 10 feet diameter turbine to new location where wind speed is 15 miles per hour.
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