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Is sound produced when there are increases in pressure or oscillations in pressure?
Wiki User
∙ 11y ago
The speed of sound does not change with atmospheric pressure.
The speed of sound changes with temperature.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoOscillations in pressure
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What happens to the speed of sound if the temperature of the medium increases?
Speed of sound increase when temperature increases.
What is transversal waves?
Wave is a propagation of oscillations of some physical parameter (perturbation of pressure, mass density, electrical or magnetic fields...). If oscillations are perpendicular to the direction of propagation - the wave is transverse (for example - electromagnetic wave). If physical parameter oscillates along the propagation direction - the wave is longitudinal(Sound).
Why does tightening a guitar string raise the pitch of the string when it's played?
It increases the frequency of the sound waves produced by by the plucked string.
How loud is a Boeing 747?
A Boeing 747 at 100 m distance can have a sound pressure level of L = 130 dBSPL.Never forget to tell the distance of the measuring microphone from the sound source, because the closer you are the louder it is.The sound pressure level decreases by 6 dB per doubling of distance from the source to 1/2 (50 %) of the sound pressure initial value.The sound pressure decreases inversely as the distance increases with 1/r from the sound source.
Sound needs a medium to travel?
Yes. Sound requires a medium to travel in.It is comprised of pressure waves (a mechanical phenomenon). Sound requires something to compress and rarefy (a medium). Sound pressure, or acoustic pressure, is the local pressure deviation from the ambient (average, or equilibrium) atmospheric pressure.Sound pressure can be measured using a microphone in air and a hydrophone in water. The SI unit for sound pressure is the pascal (symbol: Pa). The effective sound pressure is the root mean square of the instantaneous sound pressure over a given interval of time (or space). Sound can't travel in a vacuum because it lacks the necessary medium.
Why is an oscilloscope used to measure sound waves?
An osciloppe measures oscillations. Oscillations are vibrations. And vibrations are sound waves.
Is sound produced by changes in force's pressure's and velocity?
Sound and noise are sound pressure variations measured by an SPL meter. SPL = Sound Pressure Level.
How number of particles increases when pressure increases?
Increased particle velocity v leads to increased sound pressure p. v = p / Z Scroll down to related links and look for "Sound Pressure" and for "Particle Velocity".
How is sound prouduced?
physics,waves vibrations and oscillations
What happens to the speed of sound if the temperature of the medium increases?
Speed of sound increase when temperature increases.
Sound will travel fastest in air at?
The speed of sound increases with pressure, so close to the Earth's surface.
What does loudness increase with?
Loudness increases with increasing amplitude of the sound wave, also called increasing sound pressure.
If a sound seems to be getting louder which of the following is probably increasing intensity frequency wavelength or speed and sound?
The sound will get louder when the amplitude of the sound pressure increases. The loudness has to do with the sound field quantity called sound pressure or sound pressure level (SPL). The sound intensity or acoustic intensity means the sound energy quantity. Our ears and the microphone diaphragms are moved by the sound pressure variations.
How does venous pressure rise during 2nd heart sound?
The venous pressure increases during the second heart sound because of the increased negative pressure. 2nd heart sound heard when AV valves close,ventricular diastole
What is transversal waves?
Wave is a propagation of oscillations of some physical parameter (perturbation of pressure, mass density, electrical or magnetic fields...). If oscillations are perpendicular to the direction of propagation - the wave is transverse (for example - electromagnetic wave). If physical parameter oscillates along the propagation direction - the wave is longitudinal(Sound).
What part of a waveform describes a sound's frequency or pitch?
It depends upon how many oscillations per second. 50 oscillations per second = 50 hertz (hz).
How are the amplitudes of sound waves?
There is not only "one" amplitude. There is an amplitude of particle displacement ξ, or displacement amplitude, an amplitude of sound pressure p or pressure amplitude, an amplitude of sound particle velocity v, or particle velocity amplitude, an amplitude of pressure gradient Δ p, or pressure gradient amplitude. If the "sound" inceases, the "amplitude" also increases.
