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Sound
Page 5
Questions (509)
A stone is dropped into a well of depth 11 m. How long after that, the sound of the splash can be heard? Given speed of sound
3 answers
asked by
Hannah
2,309 views
(a) By what factor is one sound more intense than another if the sound has a level 17.0 dB higher than the other?
(b) If one
3 answers
asked by
Justin
1,701 views
Sound travels at 343 meters per second. You measured 3 seconds for sound travel from place A to place B. What is the distance
7 answers
asked by
skyler
1,617 views
At a concert, the loudness of sound, L, in decibels, is given by the equation L=10log(I/I_o), where I is the intensity, in watts
3 answers
asked by
Jus
1,520 views
What is the intensity in watts per meter squared of 85.0 db sound?
4 answers
asked by
Jason
1,453 views
Read the sentence.
The loud tick of the clock and the endless drip-drop of the faucet made it difficult to concentrate. The
1 answer
asked anonymously
31 views
Sound engineers make sure that the “sound matches the movements” of characters and other objects in the film. What does this
1 answer
asked by
I hate math
118 views
Is it possible to have music without any sound but rhythm?
(1 point) Yes, if only drums were used. No, rhythm is a form of sound.
1 answer
asked anonymously
156 views
The Doppler effect occurs when
a) a source of sound moves toward a listener b) a listener moves toward a source of sound c) a
3 answers
asked by
anonymous
1,389 views
A splash is heard 3.12s after a stone is dropped into a well 45m deep.the speed of sound in air is(g=10m/s2)
4 answers
asked by
payal
1,377 views
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 336 m/s.
a)An observer
3 answers
asked by
Ben
1,366 views
The lower frequency limit for human hearing is usually considered to be 20.0 Hz. (a) What is
the speed of sound in m/s if the air
3 answers
asked by
Hannah
1,330 views
Hans stands at the rim of the grand canyon and yodels down to the bottom. He hears his yodel echo back from the canyon floor
2 answers
asked by
jay
1,363 views
Expensive amplifier A is rated at 210W , while the more modest amplifier B is rated at 45W .
Estimate the sound level in decibels
2 answers
asked by
waves
1,305 views
When a tuning fork is held over the open end of a very thin tube, as in the figure below, the smallest value of L that produces
1 answer
asked by
Jolie
1,306 views
A stationary whistle emits a sound of 188 Hz. If passengers in a car hear the whistle with a frequency of 198 Hz, how fast was
2 answers
asked by
Sav
1,299 views
As measured from centre ice, a single wildly cheering hockey fan can produce a sound intensity level of 60dB. What sound
2 answers
asked by
HelpMeWithPhysics
1,275 views
An 8 hour exposure to a sound level of 95.0 dB may cause hearing damage. What energy in joules falls on a 0.850 cm diameter
4 answers
asked by
Justin
1,240 views
A speaker at an open-air concert emits 600 of sound power, radiated equally in all directions.
a)What is the intensity of the
4 answers
asked by
JessicaP
1,260 views
When the energy of a sound wave is transferred to a particle of a medium and causes it to vibrate and generate heat, the sound
2 answers
asked by
Mark Ronson
1,211 views
A train whistle is heard at 280Hz as the train approaches town. The train cuts its speed in half as it nears the station, and
1 answer
asked by
henry
1,232 views
what is the minimum riding speed needed to be able to hear the whistle? Remember, you can assume the following things: The
2 answers
asked by
taylor
1,198 views
Find the temperature at which the velocity of sound in air is 1.25 times the velocity of sound at 0 degree centigrade.
2 answers
asked by
srikar
1,162 views
A loudspeaker has a movable diaphragm (cone) that vibrates back and forth in harmonic motion to produce sound. The displacement
1 answer
asked by
sunny
1,146 views
Humans can hear sounds with frequencies up to about 20.0 kHz, but dogs can hear frequencies up to about 40.0 kHz. Dog whistles
3 answers
asked by
Romy
1,144 views
If sound travels at 330m/s in air, how long does it take for sound to travel 10,000m in air?
If sound travels at 1500m/s in
3 answers
asked by
Lucyyyyy
1,125 views
Sound travels about 343 meters per second. The function d(t)= 343t gives the distance d(t) in meters that sound travels in t
1 answer
asked anonymously
39 views
Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of the eardrum is about 8.4 mm in
2 answers
asked by
Ana
1,118 views
A loudspeaker is placed between two observers who are 114 m apart, along the line connecting them. If one observer records a
3 answers
asked by
Anonymous
1,083 views
A tuning fork has been damaged and its frequency slightly changed. What could its altered frequency be if it produces two beats
2 answers
asked by
Helen
1,094 views
You are riding your bicycle directly away from a stationary source of sound and hear a frequency that is 2.5% lower than the
1 answer
asked by
Coreen
1,109 views
One person talking softly in a room is about 60dB. If 100 people in the room are all talking at the same level the intensity is
2 answers
asked by
Anonymous
1,103 views
A grade-school teacher insists that the the overall sound level in his classroom not exceed 64 dB at his location. There are 25
2 answers
asked by
chris giordano
1,075 views
A hiker in a canyon calls out “Hello” and hears his echo 2 s later. How far away are the canyon walls?
3 answers
asked by
Faoruk
1,070 views
A hammer taps on the end of a 4.02 m long metal bar at room temperature. A microphone at the other end of the bar picks up two
2 answers
asked by
Anonymous
1,053 views
A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a speed of 357m/s . The roar from
1 answer
asked by
Anonymous
1,063 views
which is an example of a sound without rhythm?
Q: rain on a roof Q; a thunder clap Q: the beat of a drum Q: horse hooves on a
4 answers
asked by
0
137 views
A train whistle is heard at 310Hz as the train approaches town. The train cuts its speed in half as it nears the station, and
1 answer
asked by
ggg
1,011 views
The sound emitted by bats has a wavelength
of 3.45 mm. What is the frequency in air? The speed of sound in air is 343 m/s.
2 answers
asked by
Lindsey
990 views
A hiker shouts toward a vertical cliff 660 m away. The echo is heard 4.00 s later.
(a) What is the speed of sound of the hiker's
1 answer
asked by
willis tower
986 views
Expensive amplifier A is rated at 250 W, while the more modest amplifier B is rated at 45 W. (a) Estimate the sound level in
1 answer
asked by
emy
967 views
The human ear can detect sounds with frequencies between 20 Hz and 20kHz. Find the largest and smallest wavelengths the ear can
3 answers
asked by
Steve
958 views
15 beats are heard in 5 seconds when a piano key and a tuning fork of slightly higher frequency (440 Hz) are struck at the same
5 answers
asked by
alicia
946 views
At a concert, the loudness of sound, L, in decibels, is given by the equation L=10log(I/I_o), where I is the intensity, in watts
1 answer
asked by
Jus
969 views
a.)At rest, a car's horn sounds at a frequency of 410 Hz. The horn is sounded while the car is moving down the street. A
1 answer
asked by
sanchi
950 views
From a vantage point very close to the track at a stock car race, you hear the sound emitted by a moving car. You detect a
1 answer
asked by
Joe
942 views
You let out a shout, echo comes back and reaches you in 1.4 seconds. if the speed of sound in air is 343 m/s, what is the
1 answer
asked by
tim
952 views
Which of the following would be most likely to transmit sound with the highest speed?
A. An iron rail B. Wooden steps C. Water in
1 answer
asked by
Dako
893 views
170 students in a lecture hall can scream at 115 dB.
Thus, we should expect that: A. an average student can do 0.68 dB by him or
2 answers
asked by
Carrie
923 views
Sound travels at 343 meters per second. You measured 3 seconds for sound travel from place A to place B. What is the distance
4 answers
asked by
bill
921 views
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