Study Physics ch 14 Flash Cards

 
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Physics ch 14

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__________ is related to frequency.
pitch
________ are alternations in loudness, due to interference.
beats
When the frequency of the driving force equals the natural frequency of the system the system is said to be in ____________.
resonance
the lowest frequency of vibration is called the _________.
fundamental frequency
An ______ occurs where the standing wave vibrates at maximum amplitude
antinode
A ________ occurs where the two traveling waves have the same magnitude of displacement, but the displacements are in opposite directions.
node
__________ occurs when the path difference between two waves motion is an odd half wavelength.
destructive interference
_________ occurs when the path difference between two waves motion is zero or some integer multiple of wavelengths.
constructive interference
The ratio v/vs is called the _______.
Mach number
A conical wave front is the ___.
shock wave
______ results when the source velocity exceeds the speed of the wave itself.
shock waves
the SI unit of frequency is _____.
Hz - Hertz
A ________ is experienced whenever there is relative motion between a source of waves and an observer.
doppler effect
_____ are the radial lines pointing out from the source and perpendicular to the wave fronts.
rays
______ are the concentric arcs.
wave fronts
the SI unit of the intensity level is ______.
decibel
_____ is the the intensity level or the decibel level of the sound.
B (beta)
the SI unit of intensity of sound waves is _______.
W/m2
the equation for intensity is ________ divided by _____.
power ; surface area
_________ is the rate at which the energy flows through the surface divided by the surface area.
intensity
Speed of sound is faster through _______ than ______.
solid ; liquid or liquid ; gas
The speed of sound equation is ________.
v = square root of elastic property / inertial property
the speed of sound in a solid depends on _______.
youngs modulus and density. v = square root of Y/density
the speed of sound in a liquid depends on ________.
bulk modulus and density v = square root of B/density
The three types of sound waves are _____.
audible waves, infrasonic waves, ultrasonic waves
Sound waves are _________.
longitudinal waves
A low density area in the air is an area of ________.
rarefaction
A high density area in the air is an area of _______.
compression
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