PHYS 1420: SIMPLE HARMONIC MOTION
31 Cards in this Set
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The length of time it takes a point on a medium carrying a wave to go through one full cycle is the _____ of the wave.
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period
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The reciprocal of a wave's period is it's ____.
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Frequency
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The hertz is a measure of _____.
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frequency
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Two points on a wave that are half-wavelength apart are ___ degrees out of phase with each other.
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180
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The maximum displacement of any point on a wave is called the _____.
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amplitude.
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In a real wave, the process by which a wave loses energy as it travels is called ___.
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damping
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The distance between two successive points in phase is the ____ of the wave.
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wavelength
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The product of frequency and wavelength gives the _____ of a wave.
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velocity
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In a longitudinal wave, the motion of the particles is _____ to the wave velocity.
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parallel
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The nature of the medium in which it travels largely determines the ______ of a wave.
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velocity
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In a longitudinal wave, the motion of the particles is _____ to the wave velocity.
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parallel
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The nature of the medium in which it travels largely determines the _____ of a wave.
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velocity
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A sound wave consists of alternate compressions and _______ spreading through space.
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refractions
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The speed a sound wave in air depends only on _____.
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temperature
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The frequency of a note two octaves below A-440 is _____.
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110
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Overtones determine the ____ _____ of a musical sound.
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tone quality
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A drum produces no definite sense of pitch because of its _______.
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overtones
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Diffraction around corners is greater when the _____ is larger.
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area
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Because of diffraction, a narrow slit acts like a _______ of waves
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point source
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If you are moving toward a source of sound the ____ you perceive will be higher than that emitted by the source.
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pitch
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The wavelength of a sound wave varies from place to place if the ____ is moving.
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object
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Destructive interference occurs when two waves arrive at a point ___ ___ ___.
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with each other.
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Beat frequency is the ____ of the frequencies of two sounds.
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difference
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A point of maximum destructive interference is called a _____.
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node
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In a standing wave in a rope, the distance from one antinode to the next is a __________.
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halfwavelength
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The closed end of an organ pipe must be a ____ of the standing wave in the pipe.
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node
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To make an object resonate, it must be energized at one of its own ______.
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natural or resonant frequencies.
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Motion is simple harmonic when _____ is proportional to displacement.
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acceleration
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When an object is in simple harmonic motion, it is in equilibrium when its velocity is _______.
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maximum
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Increasing the intensity of a sound by a factor of 100 raises the loudness by _______ decibels.
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20
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The loudness of the sound from a siren is 50 decibels at a distance of 10 meters. The loudness at 100 meters will be ______ decibels.
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30
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PHYS 1420: LAB 3