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Question
Propagation of sound can be visualized as propagation of density variations or pressure variations in the medium. Comment.
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Solution
Air is the most common medium through
which sound travels. A vibrating object moves back and forth rapidly, a series
of compression and rarefaction is created
in the air. These make the sound wave that
propagates through the medium. Compression is the region of high pressure
and rarefaction is the region of low pressure.
Pressure is related to the number of particles
of a medium in a given volume. More density
of the particles in the medium gives more
pressure and vice versa. Thus, propagation
of sound can be visualized as propagation of
density variations or pressure variations in
the medium
Air is the most common medium through
which sound travels. A vibrating object moves back and forth rapidly, a series
of compression and rarefaction is created
in the air. These make the sound wave that
propagates through the medium. Compression is the region of high pressure
and rarefaction is the region of low pressure.
Pressure is related to the number of particles
of a medium in a given volume. More density
of the particles in the medium gives more
pressure and vice versa. Thus, propagation
of sound can be visualized as propagation of
density variations or pressure variations in
the medium
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