Concept explainers
a. Distinguish between compressions and rarefactions of a sound wave.
b. How are compressions and rarefactions produced?
(a)
The difference between compressions and rarefaction of a sound wave.
Answer to Problem 5A
The compressions is denies as pushing of molecules of neighboring molecules & rarefaction is defined as the pulses of low pressure of air.
Explanation of Solution
Introduction: The compressions & refractions are the basic of all sound wave . These are the mechanisms how the sound travel in air.
When the pulses of sound travel such that molecules of the materials pushes the neighbor molecules is known as compressions whereas the pulses of low pressure air is called rarefaction.
Conclusion: The compression pushes the air & in rarefaction the pulses of low pressure generated .
(b)
The explanation of generation of compressions & rarefaction.
Answer to Problem 5A
The generation of rarefaction is explained through the example of a long room with an open window at one end & a curtain at another end.
Explanation of Solution
Introduction: The compressions & refractions are the basic of all sound wave . These are the mechanisms how the sound travel in air.
When the pulses of sound travel such that molecules of the materials pushes the neighbor molecules is known as compressions whereas the pulses of low pressure air is called rarefaction.
This can be explained by an example of long room with an open window at one end & curtains at another end as shown below :
In compression as the door open pushes the curtains outward whereas in rarefaction as the door is suddenly closed the curtains move inwards.
Conclusion: The compression pushes the air & in rarefaction the pulses of low pressure generated .
Chapter 26 Solutions
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