Reflective SoundsIf you shout down a long hallway, and hear the echo 0.25 second later, howlong is the hallway? The speed of sound in air at 20°C is about 343 m/s.1. Read and UnderstandWhat information are you given?time for sound to travel down the hallway and back = 0.25 stime for sound to travel the length of the hallway = 0.25 s/2 = 0.125 sv = 343 m/s2. Plan and SolveWhat unknown are you trying to calculate?length of hallway = ?What mathematical expression can you use to calculate the unknown?d=vxtd = (343 m/s)(0.125 s) = 43 m3. Look Back and CheckIs your answer reasonable?Yes, the length is reasonable and the units indicate distance.Math PracticeOn a separate sheet of paper, solve the following problems.1. If you shout across a canyon, and you hear the echo 3.00 seconds later,how wide is the canyon? The speed of sound in the air is 343 m/s.bus est

Answered: Image /qna-images/answer/90e643c6-bc8c-40ab-987b-1c970a14efe4.jpg

On a separate sheet of paper, solve the following problems. 1. If you shout across a canyon, and you hear the echo 3.00 seconds later, oT S how wide is the canyon? The speed of sound in the air is 343 m/s. emist

On a separate sheet of paper, solve the following problems. 1. If you shout across a canyon, and you hear the echo 3.00 seconds later, oT S how wide is the canyon? The speed of sound in the air is 343 m/s. emist

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter17: Traveling Waves

Section17.6: Energy Transport In Waves

Problem 17.6CE

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Concept explainers

Wave Motion

A wave motion is defined as the propagation of disturbances or transfer of energy and momentum from the state of rest or equilibrium to another point in a medium without any actual transfer of matter between them. In a simple explanation, it is the propagation of energy through a medium that is produced due to the repeated vibrations of the particles. Common things we see day to day like waves on water oscillation of a pendulum or bell, light wave, and all the subatomic particles exhibiting wavelike properties. The propagation of waves depends on the medium and their properties. The wave function is the disturbance that produces waves as a function of time. This disturbance oscillates periodically with a fixed frequency and wavelength. There are linear wave motion and non-linear wave motion based on their propagation, motion, and time period where linear wave motion is like sinusoidal waves and non-linear wave motion like a wave motion that gets interrupted in the middle of their propagation.

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Reflective Sounds
If you shout down a long hallway, and hear the echo 0.25 second later, how
long is the hallway? The speed of sound in air at 20°C is about 343 m/s.
1. Read and Understand
What information are you given?
time for sound to travel down the hallway and back = 0.25 s
time for sound to travel the length of the hallway = 0.25 s/2 = 0.125 s
v = 343 m/s
2. Plan and Solve
What unknown are you trying to calculate?
length of hallway = ?
What mathematical expression can you use to calculate the unknown?
d=vxt
d = (343 m/s)(0.125 s) = 43 m
3. Look Back and Check
Is your answer reasonable?
Yes, the length is reasonable and the units indicate distance.
Math Practice
On a separate sheet of paper, solve the following problems.
1. If you shout across a canyon, and you hear the echo 3.00 seconds later,
how wide is the canyon? The speed of sound in the air is 343 m/s.
bus est

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