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Sound Waves Solutions Library

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37 solutions

Sound Waves

Q. Ultrasound waves at intensities above 104 W/m2 can do serious damage to living tissues.If 104 W/m2 corresponds to 160 dB, what is the sound intensi...

Solved • Jul 15, 2020

Sound Waves

Q. A student attaches a f = 4.5 kHz oscillator to one end of a metal rail of length L = 13 m. The student turns on the oscillator and uses a piezoelec...

Solved • Jun 2, 2020

Sound Waves

Q. Suppose an oncoming ambulance moving at 115 km/h emits a steady 785-Hz sound from its siren.What frequency, in Hz, is received by a person watching...

Solved • May 27, 2020

Sound Waves

Q. An unfingered guitar string is 0.73 m long and is tuned to play E above middle C (330 Hz). The finger is placed 0.242 m from the end of this string...

Solved • May 21, 2020

Sound Waves

Q. A student standing in a canyon yells "echo", and her voice produces a sound wave of the frequency of f= 0.55 kHz. The echo takes t = 4.5 s to retur...

Solved • May 21, 2020

Sound Waves

Q. A student standing in a canyon yells "echo", and her voice produces a sound wave of the frequency of f= 0.55 kHz. The echo takes t = 4.5 s to retur...

Solved • May 21, 2020

Sound Waves

Q. An open organ pipe (i.e., a pipe open at both ends) of length L0 has a fundamental frequency f0.Part A. If the organ pipe is cut in half, what is t...

Solved • May 19, 2020

Sound Waves

Q. A student standing in a canyon yells "echo", and her voice produces a sound wave of the frequency of f = 0.55 kHz. The echo takes t = 4.5 s to retu...

Solved • May 19, 2020

Sound Waves

Q. An unfingered guitar string is 0.73 m long and is tuned to play E above middle C (330 Hz).(a) How far from the end of this string must the finger b...

Solved • May 19, 2020

Sound Waves

Q. In which one of the following locations can a person hear the echo of a sound?A. Less than 16.6 meters in front of the reflecting surfaceB. At leas...

Solved • May 11, 2020

Sound Waves

Q. The part of the ear where sound wave compressions and rarefactions cause the eardrum to vibrate is the A. outer ear. B. auditory nerve. C. inner ea...

Solved • May 6, 2020

Sound Waves

Q. In which one of the following locations can a person hear the echo of a sound? A. Less than 33.2 meters behind the reflecting surface B. Less than ...

Solved • May 6, 2020

Sound Waves

Q. 1. Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines? A. Refracting B. Focusing C...

Solved • May 6, 2020

Sound Waves

Q. 1. Which one of the following frequencies of a wave in the air can be heard as an audible sound by the human ear? A. 1,000 Hz B. 100,000 Hz C. 0.10...

Solved • May 6, 2020

Sound Waves

Q. When a sound from a source is refracted away from the surface of the earth, it gives an indication that the A. wind is blowing in the direction of ...

Solved • May 6, 2020

Sound Waves

Q. In a stringed musical instrument, the sound frequency of a particular string can be increased by A. lengthening the string. B. loosening the string...

Solved • May 6, 2020

Sound Waves

Q. If a string vibrates at the fundamental frequency of 528 Hz and also produces an overtone with a frequency of 1,056 Hz, this overtone is the A. fir...

Solved • May 6, 2020

Sound Waves

Q. 1. In a transverse wave that travels through a medium, the molecules of the medium vibrate A. at right angles to the direction in which the wave tr...

Solved • May 6, 2020

Sound Waves

Q. If a person is in front of a smooth surface from which a sound is reflected, the person would hear a sound that A. seems to lack overtones. B. seem...

Solved • May 6, 2020

Sound Waves

Q. If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have A. a frequency higher than the original f...

Solved • May 6, 2020

Sound Waves

Q. The _______ of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time. A. compression B. i...

Solved • May 5, 2020

Sound Waves

Q. Rarefaction occurs only in a _______ wave. A. sympathetic. B. transverse. C. longitudinal. D. forced. 

Solved • May 5, 2020

Sound Waves

Q. In a stringed musical instrument, the part that vibrates in resonance with the sound waves produced by the strings is called the A. reed. B. diaton...

Solved • May 5, 2020

Sound Waves

Q. The multiple reflection of a single sound wave is a/an A. echo. B. diffraction. C. reverberation. D. refraction. 

Solved • May 5, 2020

Sound Waves

Q. The function of the eardrum in the middle ear is to A. carry the sound energy to the brain. B. collect the sound waves. C. vibrate with the frequen...

Solved • May 5, 2020

Sound Waves

Q. When a guitar string plays the note "A" the string vibrates at 440 Hz.What is the period of vibration?

Solved • May 2, 2020

Sound Waves

Q. When the temperature of the air is 25°C, the velocity of a sound wave traveling through the air is approximately.A. 320 m/s. B. 332 m/s. C. 347 m/s...

Solved • Apr 30, 2020

Sound Waves

Q. A scientist measures the speed of sound in a monatomic gas to be 449 m/s at 20°C.What is the molar mass of this gas?

Solved • Apr 29, 2020

Sound Waves

Q. You live on a busy street, but as a music lover, you want to reduce the traffic noise.Part A If you install special sound reflecting windows that r...

Solved • Apr 29, 2020

Sound Waves

Q. In a sound wave, the displacement nodes are pressure (nodes or antinodes) and displacement antinodes are pressure (nodes or antinodes).

Solved • Apr 27, 2020

Sound Waves

Q. A moth of length 1.0 cm is flying about 1.0 m from a bat when the bat emits a sound wave at 80.0 kHz. The temperature of air is about 10.0∘C. To se...

Solved • Apr 10, 2020

Sound Waves

Q. Based on the information presented in the introduction of this problem, what is a sound wave?1) Propagation of sound particles that are different f...

Solved • Apr 8, 2020

Sound Waves

Q. You are hiking along a trail in a wide, dry canyon where the outdoor temperature is T 30.5° C. To determine how far you are away from the canyon wa...

Solved • Apr 7, 2020

Sound Waves

Q. 1. For waves that move at a constant wave speed, the particles in the medium do not accelerate. Select the correct answer.a) False b) True 2. Two c...

Solved • Mar 24, 2020

Sound Waves

Q. Cats can hear sound frequencies up to 70,000 Hz. Bats send and receive ultrahigh frequency squeaks up to 120,000 Hz. Which hears the sound of short...

Solved • Oct 6, 2017

Sound Waves

Q. The speed of sound cs in a material is given by c s = √ B / ρ, where ρ is the density of the material, with units of kg / m3 , and B is the bulk mo...

Solved • May 29, 2017

Sound Waves

Q. Sound in air travels at around 340 m/s. If a sound wave in air carries a wavelength of 6.86 m, what would its wavelength be when it enters the wate...

Solved • Mar 28, 2017