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Fundamentals of Physics Study Set 2

Physics & Astronomy

Quiz 17 :

Waves II

Quiz 17 :

Waves II

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During a time interval of exactly one period of vibration of a tuning fork, the emitted sound travels a distance:
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This graph shows the position of an element of air as a function of time as a sound wave passes through it.Which letter corresponds to the period of the wave? img
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Two small identical speakers are connected (in phase)to the same source.The speakers are 3 m apart and at ear level.An observer stands at X, 4 m in front of one speaker as shown.The sound she hears will be most intense if the wavelength is: img
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Two waves are out of phase by half a wavelength.What is this in radians?
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The speed of a sound wave is determined by:
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What is a wavefront?
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The longitudinal displacement of a mass element in a medium as a sound wave passes through it is given by s = sm cos (kx - ωt).Consider a sound wave of frequency 440 Hz and wavelength 0.75m.If sm = 12 µm, how long does it take an element of air to move from a displacement of 12 µm to a displacement of 0 µm?
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A fire whistle emits a tone of 170 Hz.Take the speed of sound in air to be 340 m/s.The wavelength of this sound is about:
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Two sound waves are traveling through the same medium.They have the same amplitude, wavelength, and direction of travel.If the phase difference between them is 7π, the type of interference they exhibit is:
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The difference between transverse and longitudinal waves:
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Take the speed of sound to be 340 m/s.A thunder clap is heard about 3 s after the lightning is seen.The source of both light and sound is:
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This graph shows the position of an element of air as a function of time as a sound wave passes through it.Which letter corresponds to the amplitude of the wave? img
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The longitudinal displacement of a mass element in a medium as a sound wave passes through it is given by s = sm cos (kx - ωt).Consider a sound wave of frequency 440 Hz and wavelength 0.75m.If sm = 12 µm, what is the displacement of an element of air located at x = 1.2 m at time t = 0.11 s?
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Two small identical speakers are connected (in phase)to the same source.The speakers are 3 m apart and at ear level.An observer stands at X, 4 m in front of one speaker as shown.If the amplitudes are not changed, the sound he hears will be least intense if the wavelength is: img
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The speed of sound in air is 340 m/s, and the density of air is 1.2 kg/m3.If the displacement amplitude of a 440-Hz sound wave is 10 µm, what is its pressure-variation amplitude?
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Which of the following properties of a sound wave determine its "pitch"?
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At points in a sound wave where the gas is maximally compressed, the pressure
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The bulk modulus of water is 2.2 x 109 Pa, and its density is 1.0 x 103 kg/m3.What is the speed of sound in water?
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Two waves are out of phase by half a wavelength.What is this in degrees?
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A sound wave has a wavelength of 3.0 m.The distance from a compression center to the adjacent rarefaction center is:
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