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What is the sound pressure at sea level?
There is no sound pressure, there is atmospheric pressure of 101.325 kPa equivalent to 760 mmHg (torr), 29.92 inHg or 14.696 PSI. The sound pressure is the local pressure deviation from the ambient atmospheric pressure caused by a sound wave.
Atmospheric pressure in context of sound?
The instantaneous sound pressure is the deviation from the local ambient pressure po caused by a sound wave at a given location and given instant in time. The effective sound pressure is the root mean square of the instantaneous sound pressure over a given interval of time (or space). Total pressure is given by: p-total = po + p-osc where: po = local ambient atmospheric (air) pressure, p-osc = sound pressure deviation. The standard atmosphere is a unit of pressure and is defined as being equal to po = 101325 Pa. Sound pressure level (SPL) or sound level is a logarithmic measure of the effective sound pressure of a sound relative to a reference value. It is measured in decibels (dB) above a standard reference level. The commonly used reference sound pressure level in air of 0 dB is equivalent to the sound pressure of p = 20 µPa RMS, which is usually considered the threshold of human hearing at 1 kHz. The threshold of of pain has a level of about 137.5 dB equivalent to a sound pressure of 150 Pa.
Is rarefaction a high pressure area of tightly packed molecules?
No, rarefaction is the opposite of a high pressure area. It is a low pressure area where molecules are spaced further apart. This occurs in a sound wave when the air molecules are spread out, creating areas of decreased pressure.
What factors determine the intensity of air pressure?
Atmospheric pressure is closely approximated by the hydrostatic pressure caused by the weight of air above the measurement point. It is defined as the force per unit area exerted against a surface by the weight of air above that surface. The average atmospheric pressure, at sea level, is about 1 atmosphere (atm) = 101325 pascals, or 101.3 kPa (kilopascals). Don't say intensity of air pressure. Say strength of air pressure, because intensity is an "energy quantity" and pressure is a "field quantity. Our eardrums are moved only by the sound pressure. Scroll down to related links "Conversion of sound units (levels)".
What is a flash of lightning and the thunder that follows?
A flash of lightning is the visible discharge of electricity that occurs between clouds or between a cloud and the ground during a storm. Thunder is the sound created by the rapid expansion and contraction of air caused by the intense heat of a lightning bolt. The noise from thunder occurs because of the rapid increase in pressure and temperature of the air surrounding the lightning bolt.
The low2 point of a sound wave the rarefractions where the lowest air pressure occurs?
density
What is the low point of a sound wave (rare fractions) where the lowest air pressure occurs?
convections
The peak of sound wave where the lowest air pressure occurs?
The peak of a sound wave where the lowest air pressure occurs is called the rarefaction. This is the point where the air molecules are spread out, creating a region of decreased pressure compared to the surrounding air.
What is the lowest point on a Sound or light wave?
The lowest point on a sound wave is the trough, which represents the lowest amplitude or pressure point in the wave. In a light wave, the lowest point is the trough as well, representing the lowest intensity or energy level of the wave.
What is the lowest point is Connecticut?
long island sound
What is the high point on a sound wave?
The high point on a sound wave is called the crest, where the amplitude is at its maximum value. This is the point where the air particles are most compressed and where the sound is perceived as loudest.
Are ocean waves and sound waves different?
ocean waves have to do with water and sound waves have to do with sound
What is the lowest point of the state Vermont?
blah, blah, blah, thats it. [try to sound logical]
What is the lowest point of elevation in Connecticut?
Long Island Sound at sea level is the lowest point in Connecticut.
What is the relationship between sound power and sound pressure in acoustics?
In acoustics, sound power is the total amount of energy produced by a sound source, while sound pressure is the force exerted by sound waves on a surface. The relationship between sound power and sound pressure is that sound power determines the potential loudness of a sound, while sound pressure measures the actual intensity of the sound at a specific point. Sound power and sound pressure are related, but they are not directly proportional to each other.
Are sound waves characterized by crest and troughs?
They can be. In air and other fluids sound is transmitted by variations in pressure. When those variations impinge on the eardrums (in our ears) they make them vibrate. If we were able to monitor the horizontal position of a point on one eardrum through time (assuming that the person in possession of the eardrum was standing) then we would see a complicated wave form with crests and troughs.
What is the time interval between direct sound and reflected sound?
That completely depends on how far you are from the point where the reflection occurs. (That's the whole principle of SONAR.)
