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Sound
Page 6
Questions (509)
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
Sound intensities, I, are often compared with the threshold of human hearing, I_0, which is about 10^-12 watts per meter
2 answers
asked by
Anonymous
904 views
You are standing 7 feet from one speaker and 13 feet from another. Both speakers are producing the same sound. If the combined
3 answers
asked by
Jennie
881 views
Danny is measuring the loudness of a police siren. At t=2 seconds, the siren's loudness is at its maximum of 112 dB for the
3 answers
asked by
SC
875 views
A bat moving at 3.7 m/s is chasing a flying
insect. The bat emits a 36 kHz chirp and receives back an echo at 36.79 kHz. At what
1 answer
asked by
Anonymous
864 views
What are areas of compressiona and rarefraction?
Thanks
2 answers
asked by
ilovedance.
840 views
Hi I am absolutely stumped on this question.
A loudspeaker is placed between two observers who are 110 m apart, along the line
7 answers
asked by
Joey
850 views
In the experiment, a meter is hooked up to a speaker to monitor the amplitude of the received sound. Suppose the background
2 answers
asked by
Michael
838 views
A spherical source radiates sound uniformly in all directions. At a distance of 12 m, the sound intensity level is 100 dB. At
1 answer
asked by
T
844 views
A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.800 s.
(
3 answers
asked by
Justin
844 views
A bat moving at 5.6 m/s is chasing a flying
insect. The bat emits a 60 kHz chirp and receives back an echo at 60.63 kHz. At what
2 answers
asked by
Anonymous
831 views
A rock band playing an outdoor concert produces sound at 120 5.0 away from their single working loudspeaker.
2 answers
asked by
Anonymous
801 views
A train moving at a constant speed is passing a stationary observer on a platform. a flute player is playing a note with
2 answers
asked by
John
806 views
Factory Worker A is exposed to a sound of a constant intensity of 6.30 × 10–4 W m–2 at a distance of 1.00 m from a noisy
2 answers
asked by
nancy
808 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
2 answers
asked by
Justin
799 views
The ability to hear a “pin drop” is the sign of sensitive hearing. Suppose a 0.55-g pin is dropped from a height of 28 cm,
2 answers
asked by
Cameron Arnold
792 views
Hi I am absolutely stumped on this question.
A loudspeaker is placed between two observers who are 110 m apart, along the line
3 answers
asked by
Joey
794 views
a person observes a firework display from a safe distance of 750 kilometer assuming that sound travels at 340 meters per second
2 answers
asked by
daquan
798 views
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 42 dB by an observer 10 km
1 answer
asked by
Jake
801 views
A tuning fork is set into vibration above a vertical open tube filled with water. The water level is allowed to drop slowly. As
2 answers
asked by
kassy
785 views
the speed of sound in air at 0°C is 330m/s. at what temperature will the velocity of sound become 366m/s ?
2 answers
asked by
alia
790 views
a stone is dropped into a well 44 meter deep and the sound of speash is heared after 3.12 second find the speed of sound air
3 answers
asked by
sonu
740 views
A member of an aircraft maintenance crew wears protective earplugs that reduce the sound intensity by a factor of 355. When a
3 answers
asked by
Marco
767 views
The intensity of sound is x W/m2 at a distance of 5 m from the source. What is the intensity of the sound at a distance of 20 m
2 answers
asked by
ashley --
749 views
the speed of sound is approximately 1.2 x 10^3km/h how long does it take for sound to travel 7.2 x 10^2km. answer in minutes
2 answers
asked by
Sam
739 views
If a large housefly 3 m away from you makes a noise of 43 dB, what is the noise level of 1200 flies at that distance, assuming
2 answers
asked by
HelpPlease
761 views
a siren on top of the police car emits sound at frequency of 820 Hz. The car passed a bystander on a sidewalk and is receding at
2 answers
asked by
Maria
729 views
How many seconds will elapse between seeing lightning and hearing the thunder if the lightning strikes 2 mi away and the
2 answers
asked by
Hannah
731 views
Initially, you hear the siren at 90 dB. When the distance between you and the ambulance is a quarter of what it was initially,
2 answers
asked by
Nadya
832 views
Who will hear the voice of a singer first- a person in the balcony 50.0 m away from the stage, or a person 3000 km away at home
3 answers
asked by
jenish
728 views
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat
2 answers
asked by
Anonymous
709 views
What sound intensity level in dB is produced by earphones that create an intensity of 4.00¡¿10^-2 W/m^2?
1 answer
asked by
Jason
704 views
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example,
1 answer
asked by
sisca
703 views
Formula given:
The decibel (dB) scale for measuring loudness, d, is given by the formula d = 10 log base ten(I X 12 to the power
1 answer
asked by
Donna
716 views
You are trying to overhear a juicy conversation, but from your distance of 17.0 m, it sounds like only an average whisper of
3 answers
asked by
Jill
706 views
If you shout across a canyon and hear the echo 0.42 s later, how wide is the canyon?
1 answer
asked by
max
690 views
A certain sound has a wavelength of 1.70m in the air. The speed of sound in water is 1.45x10³m/s. The speed of sound in steel
2 answers
asked by
akon
674 views
a gun is fired at a distance of 24.3km away from man. he hears the sound after 27 second. find the speed of sound at which it
4 answers
asked by
vishal
682 views
At 25 m from a sound source, the intensity level is 55 dB. What's the level at distance of 56m? What's the level at distance of
2 answers
asked by
jR
685 views
A car is parked 23.0 m directly south of a railroad crossing. A train is approaching the crossing from the west, heading
1 answer
asked by
Faune
701 views
If the intensity of a person’s voice is 3.6×10−7
W/m2 at a distance of 2.1 m, how much sound power does that person
1 answer
asked by
hannah
666 views
A skyrocket explodes 77 m above the ground. Three observers are spaced 106 m apart, with observer A directly under the point of
1 answer
asked by
Aj
672 views
A baby whale gets lost from his mother while swimming through a large underwater canyon. Frantically the baby whale yells for
2 answers
asked by
Help please
671 views
A group of hikers hears an echo 2.50 s after shouting. If the temperature is 20.0°C, how far away is the mountain that
2 answers
asked by
Erika
676 views
a rock group is playing in a club. Sound emerging outodoors from an open door spreads uniformly in all directions. If the
1 answer
asked by
Teah
658 views
Sound is emitted by a point source. You wish to compare the sound intensity and sound intensity level from this source at two
1 answer
asked by
ddsMom
667 views
You are viewing a New Year's Day fireworks display at a distance of 1500 m. It is 4.0°C. How long does it take the sound of the
3 answers
asked by
sabeen
655 views
the sounds of a cricket gets stronger as you get closer to it. if you get twice as close, how much louder will the sound be?
1 answer
asked by
mikayla
634 views
Two speakers are both emitting sounds, the first with an intensity level of 1 x 10^{-11} \frac{W}{m^2} and the second with an
2 answers
asked by
Anonymous
638 views
A spherical source radiates sound uniformly in all directions. At a distance of 12 m, the sound intensity level is 100 dB. At
1 answer
asked by
T
656 views
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