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Sagot :
Answer:
531.65 m
Explanation:
Let d₁ be the distance between the hunter and the closer cliff and d₂ be the distance between the hunter and the farther cliff. The speed of sound v = 343 m/s.
t₁ is the time taken for the sound to reach the neared cliff and return back to the hunter as echo. Hence:
t₁ = 2d₁/343
t₂ is the time taken for the sound to reach the farther cliff and return back to the hunter as echo. Hence:
t₂ = 2d₂/343
t₂ - t₁ = 2.1
2d₂/343 - 2d₁/343 = 2.1
d₂ - d₁ = 360.15 (2)
t₃ is the time taken by the third echo as a result of the second echo reaching the nearer cliff. Hence:
t₃ = 2d₁/343
0.5 = 2d₁/343
d₁ = 85.75 m
d₂ - d₁ = 360.15
d₂ - 85.75 = 360.15
d₂ = 445.9 m
The distance between the two cliffs = d₁ + d₂ = 445.9 + 85.75 = 531.65 m
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