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A woman standing on a beach can just see the top of a lighthouse 25 km away. If her eye height above sea level is 1.65 m, determine the height of the lighthouse above sea level. Taking into account the effects of curvature and refraction. *

A woman standing on a beach can just see the top of a lighthouse 25 km away. If her eye height above sea level is 1.65 m, determine the height of the lighthouse above sea level. Taking into account the effects of curvature and refraction. *

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A woman standing on a beach can just see the top of a lighthouse 25 km away. If her eye height above sea level is 1.65 m, determine the height of the lighthouse above sea level. Taking into account the effects of curvature and refraction. 27.16 25.16 21.17 O 1.65
Transcribed Image Text:A woman standing on a beach can just see the top of a lighthouse 25 km away. If her eye height above sea level is 1.65 m, determine the height of the lighthouse above sea level. Taking into account the effects of curvature and refraction. 27.16 25.16 21.17 O 1.65
A surveyor counted 50, 52, 53, 51, 53, and 51 paces in walking along a 45 - m course laid out on a concrete pavement. He then took 768, 771, 772, 770, 769, and 770 paces in walking an unknown distance XY. His pace factor should be equal to: * 0.87 m/pace 1.15 m pace 0.69 m/pace 1.51 m/pace
Transcribed Image Text:A surveyor counted 50, 52, 53, 51, 53, and 51 paces in walking along a 45 - m course laid out on a concrete pavement. He then took 768, 771, 772, 770, 769, and 770 paces in walking an unknown distance XY. His pace factor should be equal to: * 0.87 m/pace 1.15 m pace 0.69 m/pace 1.51 m/pace
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