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25 Cards in this Set
- Front
- Back
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Each compression in the waveform of the longitudinal wave shown above corresponds to what feature of the transverse wave below it?
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Crests
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Each stretched region in the waveform of the longitudinal wave shown above corresponds to what feature of the transverse wave below it?
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Troughs
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Which of the following most affects the wavelength of a mechanical wave moving through a medium? Assume that the frequency of the wave remains constant.
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The nature of the medium
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Suppose that two sound waves passing through the same medium have different wavelengths. Which of the following is most likely to be the reason for the differing wavelengths?
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Differences in frequency
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Two waves traveling in opposite directions on a rope meet and undergo complete destructive interference. Which of the following best describes the waves a moment after the waves meet and coincide?
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The waves continue unchanged
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Which of the following types of interference will occur when the pulses in the figure above meet?
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Constructive interference
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A 2.0 m long stretched rope is fixed at both ends. Which wavelength would not produce standing waves on this rope?
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3.0 m
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The standing wave shown in the diagram above would be produced on a string of length L by a wave having wavelength
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L
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How many nodes and antinodes are shown in the standing wave above?
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Five nodes and Four antinodes
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In the diagram above, use the superposition principle to find the resultant wave of waves X and Y.
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a
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Pitch depends on the ______ of a sound wave.
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Frequency
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A train moves down the track toward an observer. The sound from the train, as heard by the observer, is _______ the sound heard by a passenger on the train.
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higher pitch than
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At a distance of 3 m, the intensity of a sound will be _____ the intensity it was at a distance of 1 m.
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One-ninth
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The perceived loudness of a sound is measured in
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Decibels
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How many beats per second are heard when two vibrating tuning forks having frequencies of 216 Hz and 224 Hx are held side by side?
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8 Hz
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The timbre of the sound from a musical instrument is a result of the combination of ____________ in the sound.
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All the harmonics
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An amusement park ride has frequency of 0.05 Hz. What is the ride's period?
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20
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A periodic wave has a wavelength of 0.50 m and a speed of 20 m/s. What is the wave frequency?
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40 Hz
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A musical tone sounded on a piano has a frequency of 261.6 Hz and a wavelength of 1.31 m. What is the speed of the sound wave?
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343 m/sec.
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Radio waves from an FM station have a frequency of 103.1 MHz. If the waves travel with a speed of 3.00 x 10^8 m/s, what is the wavelength?
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convert megaHertz to Hertz
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Bats chirp at high frequencies that humans cannot hear. They use the echoes to detect small objects, such as insects, as small as one wavelength. If a bat emits a chirp at a frequency of 60.0 kHz and the speed of sound waves in air is 340 m/s, what is the size in millimeters of the smallest insect that the bat can detect?
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5.67
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What is the intensity of sound waves produced by a trumpet at a distance of 1.6 m when the power output of the trumpet is 0.30 W?
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9.32 x10^-3
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If the intensity of sound is 8.0 x 10 ^-4 W/m^2 at
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0.25 Watts
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A wave on a guitar string has a velocity of 684 m/s. The guitar string is 62.5 cm long. What is the fundamental frequency of the vibrating string?
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547.2 Hz
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A resonating glass tube closed at one end is 4.0 cm wide and 47.0 cm long. What are the frequencies of the first two harmonics for the resonating tube? The speed of sound in air at this temperature is 346 m/s.
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184.4 Hz and 552 Hz
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