A. 330.0m
B. 335.4m
C. 660.0m
D. 670.8m
Correct Answer:
Option B – 335.4m
Explanation
Recall V = F × λ
= 260 × 1.29
= 335.4ms−¹
Echo time = 2/2 = 1 sec
Distance = v x t = 335.4 x 1
= 335.4m
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![an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms-1]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "an observer hears an echo 1.26 seconds after blowing a whistle near a cliff. calculate the distance of the observer from the cliff. [speed of sound in air = 330ms-1]")
