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
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Chapter2: Loads On Structures
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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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