The Power Generated by a Windmill Is Related to the Speed

question 77

Multiple Choice

The power generated by a windmill is related to the speed of the wind by the formula , where is the speed of the wind (in mph) and is the power (in watts) . Find the speed of the wind when the windmill is producing 413 watts of power.

• A) 27.07 mph
• B) 28.99 mph
• C) 28.25 mph
• D) 27.44 mph
• E) 27.56 mph

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Definitions:

Sample Variance

A measure of variation or dispersion of a set of sample values, calculated as the average of the squared differences from the Sample Mean.

Variance

A statistical measure of dispersion, indicating how spread out the values of a dataset are.

Symbol

A mark or character used as a conventional representation of an object, function, or process.

Numerator

The top number in a fraction, indicating how many parts of a whole are being considered.