You can hear an echo when the sound wave reflects from the wall and reaches you.If you hear an echo, 2 seconds after you produce the sound, how far is the wall?Use a speed of sound of 340 m/s for this question. Group of answer choices1360 meters away from you340 meters away from you170 meters away from you680 meters away from you
Question
You can hear an echo when the sound wave reflects from the wall and reaches you.If you hear an echo, 2 seconds after you produce the sound, how far is the wall?Use a speed of sound of 340 m/s for this question. Group of answer choices1360 meters away from you340 meters away from you170 meters away from you680 meters away from you
Solution
To solve this problem, we need to understand that the echo is the sound wave reflecting off the wall and coming back to you. So, the total time for the sound to travel is the time to the wall and back.
Given: Time for the sound to travel to the wall and back = 2 seconds Speed of sound = 340 m/s
We can use the formula for distance which is speed x time.
Distance = Speed x Time Distance = 340 m/s x 2 s Distance = 680 meters
But this is the total distance (to the wall and back). So, the distance to the wall is half of this.
Distance to the wall = 680 meters / 2 Distance to the wall = 340 meters
So, the wall is 340 meters away from you.
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