Concept explainers
On a field trip to Echo Cave, you clap your hands and receive an echo 1 second later. How far away is the cave wall?
The distance of the cave wall when you clap your hands in an echo cave and receive an echo 1 s later.
Answer to Problem 47A
The distance of the cave wall is 170 m when you clap your hands in an echo cave and receive an echo 1 s later.
Explanation of Solution
Given:
Speed of sound wave (
Time taken by sound wave (echo) to travel to the cave wall and reflect back = 1 s
So,
Time taken by sound wave to travel to the wall (
Formula used:
Distance of the cave wall (
Calculation:
Putting the values and we get;
Distance of the cave wall (
Conclusion:
The distance of the cave wall is 170 m when you clap your hands in an echo cave and receive an echo 1 s later.
Chapter 26 Solutions
Conceptual Physics: The High School Physics Program
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