Question

wind energy is one of the fastest - growing segments of the energy production industry in the united states. a manufacturer makes several sizes of wind turbines. wind turbine blades are mounted on a tower that is made of three sections. the bottom section of the tower is modeled by a cylinder with diameter 15 feet. the table gives information about wind turbines.

wind turbine information

blade
model
length
(feet)
maximum blade
tip speed
(miles per hour)
1
102
138
2
116
183
3
146
163
4
148
157
5
148
200

energy produced by each wind turbine depends on the local wind speed. the monthly energy production for one of the wind turbines is shown in the graph.

monthly energy
production

what is the difference in kilowatt hours of monthly energy production between an average local wind speed of 15 miles per hour and an average local wind speed of 10 miles per hour?

type your answer in the box. you may use numbers and/or a negative sign (-) in your answer

Explanation:

Step1: Find energy production at 10 mph

From the bar - graph, when the average local wind speed is \(10\) mph, the energy production is \(1800\) kWh.

Step2: Find energy production at 15 mph

From the bar - graph, when the average local wind speed is \(15\) mph, the energy production is \(2400\) kWh.

Step3: Calculate the difference

The difference in energy production is \(2400 - 1800\).

$$2400-1800 = 600$$

Answer:

\(600\)