A windsock is a sock-shaped device attached to a swivel on top of a pole. Windsocks at

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A windsock is a sock-shaped device attached to a swivel on top of a pole. Windsocks at airports are used by pilots to see instantaneous shift s in the direction of the wind. If one drew a line colinear with a windsock’s orientation at any instant, the line would best approximate 

(a) A path line, 

(b) A streak line, or

(c) A streamline.

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Engineering Fluid Mechanics

ISBN: 9781118880685

11th Edition

Authors: Donald F. Elger, Barbara A. LeBret, Clayton T. Crowe, John A. Robertson

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