A man stands in front of a tall wall and produces a sound. If he...
PHYSICS
WAEC 1993
A man stands in front of a tall wall and produces a sound. If he receives the echo of the sound two seconds later, calculate his distance from the wall. (The speed of sound in air is 330ms-1)
- A. 600m
- B. 400m
- C. 330m
- D. 328m
Correct Answer: C. 330m
Explanation
x = vt/2 = 330
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