Physics Physics Practice Problems Solutions Library

# Sound Waves Solutions Library

Access 44 Sound Waves video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Sound Waves learn videos.

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44 solutions

Sound Waves

#### Q. When a sound wave moves past a point in air, what happens to the density of air at thispoint?1. There is no air after the sound wave passes.2. Ther...

Solved • Jan 11, 2021

Sound Waves

#### Q. The fundamental frequency of a pipe that is open at both ends is 594 Hz .A) How long is this pipe?B) If one end is now closed, find the wavelength ...

Solved • Nov 3, 2020

Sound Waves

#### Q. When a sound wave moves past a point in air, what happens to the density of air at this point?

Solved • Nov 2, 2020

Sound Waves

#### Q. The pitch of a musical sound depends on the sound wave'sA. wavelength.B. frequency.C. speed.D. amplitude.E. all of these.

Solved • Oct 15, 2020

Sound Waves

#### Q. The shape of the sound waves produced by a voice or instrument determines timbre. True or False.

Solved • Oct 14, 2020

Sound Waves

#### Q. True or FalseA sound wave is an example of a longitudinal wave.

Solved • Oct 13, 2020

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. If the amplitude of a sound wave is tripled, (a) by what factor will the intensity increase? (b) By how many dB will the sound level increase?

Solved • Jul 14, 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