Longitudinal wave
Waves are vibrations that propagate in a medium or without medium with no propagation along the parts of the medium itself.
Longitudinal wave is a wave vibration direction parallel to the direction of wave propagation. A series of density and strain propagate along the spring. Density is the area where the coil spring toward each other, whereas strain is a region where the coil spring menjahui each other. Longitudinal waves consisting of density and strain patterns. Wavelength is the distance between successive density or strain sequence. Is meant here is the distance of two points and the same sequence on the density or strain. Waves occur in the form of density and renggangan. Examples of such longitudinal waves slingki / spring is pulled to the side and then released.
Waves are vibrations that propagate in a medium or without medium with no propagation along the parts of the medium itself.
Longitudinal wave is a wave vibration direction parallel to the direction of wave propagation. A series of density and strain propagate along the spring. Density is the area where the coil spring toward each other, whereas strain is a region where the coil spring menjahui each other. Longitudinal waves consisting of density and strain patterns. Wavelength is the distance between successive density or strain sequence. Is meant here is the distance of two points and the same sequence on the density or strain. Waves occur in the form of density and renggangan. Examples of such longitudinal waves slingki / spring is pulled to the side and then released.
If there is a wave
that has a vibration direction perpendicular to the direction rambatannya,
whether there is a wave that has a direction of vibration in the direction of
the waves, the answer is no. Wave in question is a longitudinal wave.
To find out more clearly the scheme of longitudinal waves, let us consider the image below:
To find out more clearly the scheme of longitudinal waves, let us consider the image below:
Pictured above is a spring that vibrated at the end. If we look at the picture above we can see that the direction of vibration in the direction
of
the waves, so-called longitudinal waves. A series of density and strain
propagate along the spring. Density is the area where the coil spring toward
each other, longitudinal waves consisting of density and strain patterns.
Wavelength is the distance between successive density or strain sequence. Is
meant here is the distance of two points and the same sequence on the density
or strain (see example in the picture above).
Lots of examples of longitudinal waves that occur in everyday life. One example is sound waves in air. Air as the medium of propagation of sound waves, close together and stretched along the direction of propagation of the air. Unlike the water waves or waves of string, sound waves can not we see the use of the eye. If someone likes listening to music, he's usually playing with a loud volume. If you have time try to see a loudspeaker. Note the movement of the loudspeaker, would move back and forth. It will result in vibration, and vibration that will result in air density and the strain causing the sound waves. We now know why the source of the sound must vibrate, because the vibration of air will form a longitudinal wave that will cause the sound waves.
Lots of examples of longitudinal waves that occur in everyday life. One example is sound waves in air. Air as the medium of propagation of sound waves, close together and stretched along the direction of propagation of the air. Unlike the water waves or waves of string, sound waves can not we see the use of the eye. If someone likes listening to music, he's usually playing with a loud volume. If you have time try to see a loudspeaker. Note the movement of the loudspeaker, would move back and forth. It will result in vibration, and vibration that will result in air density and the strain causing the sound waves. We now know why the source of the sound must vibrate, because the vibration of air will form a longitudinal wave that will cause the sound waves.
Examples of longitudinal waves:
- Waves in slinki tied at both ends stative then given fault-finding on one end
1. Wavelength
A. Definition of Wavelength
One wave length equal to the distance traveled in one period.
1) The wavelength of the transverse wave
Consider the following illustration!
In the transverse wave, a wave consists of 3 vertices and 2 stomach. The distance between two nodes or two successive abdomen called the half-wavelength or ½ λ (lambda),
2) The wavelength of the wave longitudina
Consider the following illustration!
) consists of a density and a reggangan.lIn the longitudinal wave, the wave (1
B. Creep fast wave
The distance traveled by the wave in one second so-called fast propagation of the wave. Rapid propagation of the wave is denoted by v and the unit m / s or m s-1. The relationship between v, f, λ, and T .
Description:
λ = wavelength, unit meter (m)
v = velocity of wave propagation, units meters / second (ms-1)
T = period of wave, a second or a second unit (s)
f = frequency of the wave, or 1/sekon 1/second unit (s-1)
The formula of the second wave are:
V V = λ f = λ / T
'
Example Problem:
The distance between the nearest peaks and valleys is 80 cm. If within 10 seconds there were 60 waves that pass a given point, what is the rapid propagation of the wave?
Discussion:
Waves have peaks and valleys are the wave transversal.Dari picture below shows that ½ λ = 80 cm, so that λ = 160 cn. In the 10's happened 60 waves.
f = 60 / (10) waves / s
f = 6 Hz
V = λ f
= 160 X 6 = 960 cm / s
= 9.6 m / s
So rapid propagation of the wave is 9.6 m / s
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