A child burn a cracker while standing some distance away from a wall. He hears the echo of the sound of cracker from the wall after 4 seconds of hearing its original sound. How far is the wall from the child? (Consider that velocity of sound in air is 344 m/s)
Answers
Answered by
3
distance of the wall is 688m
Answered by
0
Answer:
correct answer is 688m
Explanation:
thanks...
Similar questions