Question

Therefore, distance travelled by sound in
1 second = speed x time
= 340 m/s * (1/10)s = 34 m
Therefore, as shown in Figure 13.12, the
echo can be heard by the girl only if she is at
a distance of more than 17 m from the wall. If the distance is 34 by the formula then why is it saying that there should be more distance than 17 m from wall​

Answer 1

Answer:

17*2=34

Explanation:

because it is shown that the girl should only hear echo