A 6-mm-diameter electrical transmission line is exposed to windy air. Determine the drag force exerted on a 160-m-long section of the wire during a windy day when the air is at 1 atm and 15°C and the wind is blowing across the transmission line at 65 km/h.

Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter20: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 20.15OQ
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A 6-mm-diameter electrical transmission line is
exposed to windy air. Determine the drag force exerted on a
160-m-long section of the wire during a windy day when the
air is at 1 atm and 15°C and the wind is blowing across the
transmission line at 65 km/h.

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