Assume that a windmill blade has a radius of 50 m, and the wind is blowing at 15 mph. What would be the maximum theoretical power the windmill could produce?

What will be an ideal response?


The expression for maximum power is

Wmax = (0.593)(1.17 kg/m3)(?)(50 m)2 (15 x 0.447)3/2 = 821,192 J = 821.1 kJ

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Indicate whether the statement is true or false

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Refer to Exercise 12. Estimate n, and find the relative uncertainty in the estimate, from the following measurements: ?1 = 0.216 ± 0.003 radians and ?2 = 0.456 ± 0.005 radians.

What will be an ideal response?

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Companion animals are selected by owners for

A. Companionship B. Breeding purposes C. Racing D. Neglect

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Like coaxial lines, waveguides are perfectly shielded, which allows for no _____________

A. radiation loss B. power loss C. energy loss D. noise

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