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Sound
Page 7
Questions (509)
The velocity of sound in air is about 330m/s, and in water is about 1700m/s. Calculate the critical angle for sound leaving air
2 answers
asked by
Robert
632 views
Two pipes, equal in length, are each open at one end. Each has a fundamental frequency of 475 Hz at 297 K. In one pipe the air
2 answers
asked by
Emily
634 views
With a tuning fork of 384 hz, resonance tube lengths are acheived at 0.647m and 1.09 m. What is the speed of sound?
frequency*wav
1 answer
asked by
Alex
626 views
A bat emits a sound whose frequency is 83.6 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature
2 answers
asked by
Anonymous
623 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
Anonymous
613 views
A climber stands on a ledge on one side of a valley. He claps his hands and hears an echo from
the opposite side of the valley
2 answers
asked by
sam
637 views
Hi I am absolutely stumped on this question.
A loudspeaker is placed between two observers who are 110 m apart, along the line
2 answers
asked by
Joey
602 views
________ is the quality of sound; it is unique to particular instruments or voices .
1 answer
asked by
Sunshine124
30 views
why does an underwater swimmer hears an approaching motorboat before a swimmer on the surface does?
2 answers
asked by
nawra
599 views
You are standing 7 feet from one speaker and 10 feet from another. Both speakers are producing the same sound. If the combined
2 answers
asked by
Shae
612 views
A hiker shouts when he is at the top of a mountain. He hears an echo 2.4 seconds later from the sounds reflection off a nearby
2 answers
asked by
Austin
613 views
Elephants communicate via infrasound, at frequencies as low as 11 Hz that can travel up to 9 km. The intensity of these sounds
1 answer
asked by
Annie
609 views
Two eagles fly directly toward one another, the first at 13 m/s and the second at 21 m/s. Both screech, the first emitting a
2 answers
asked by
Cindy
595 views
A 3580 Hz tuning fork is sounded at the same time that a note on a piano is struck. You hear 8 beats/s. You loosen the string
2 answers
asked by
Jay
578 views
You are flying in an ultra-light aircraft at a speed of 41.4 m/s. An eagle, whose speed is 21.7 m/s, is flying directly toward
3 answers
asked by
Amena
567 views
A person standing close to a railroad crossing hears the whistle of an approaching train. He notes that the pitch of the whistle
3 answers
asked by
Emily
579 views
Watching a jet plane fly high over my head, I noticed that the sound seemed to be coming from directly above me when the plane
2 answers
asked by
Becca
575 views
At a recent rock concert, a dB meter registered 112 dB when placed 1.70 m in front of a loudspeaker on the stage.
(a) What was
2 answers
asked by
micole
588 views
Hi guys,
I was just wondering if I'm heading in the right direction with this question. Thank you so much in advance for your
2 answers
asked by
Kylie
576 views
The sound level in decibels is typically expressed as β = 10 log (I/I0), but since sound is a pressure wave, the sound level
2 answers
asked by
melisa
591 views
Hi, can you help me with this one?
A family ice show is held in an enclosed arena. The skaters perform to music playing at a
2 answers
asked by
sanchi
573 views
A tuning fork produces a sound with a frequency of 277 Hz and a wavelength in air of
1.21 m. What value does this give for the
5 answers
asked by
Angel
566 views
On a good night, the front row of the Twisted Sister concert would surely result in a 120 dB sound level. A Walkman produces 100
2 answers
asked by
TheShamGod
556 views
A stationary horn emits a 151 Hz tone. What frequency is heard by a passenger on a train which is moving towards this horn with
2 answers
asked by
utl
576 views
A decibel meter reads 130 dB at a certain position from a jet plane when one engine is turned on.
a) What is the sound intensity
2 answers
asked by
Sophie
557 views
if the intensity of a mosquito's buzzing is 9.3 x 10^-8 W/m^2 at a distance of 0.21 m, how much sound power does that mosquito
2 answers
asked by
Brielle
554 views
1. What is happening to that air between the instruments and your ears?
2. How can you produce the change in the frequency? 3.
2 answers
asked by
Franny
544 views
Two sounds have measured intensities of I1 = 100 W/m2 and I2 = 300 W/m2. By how many decibels is the level of sound 1 lower than
2 answers
asked by
Jane
540 views
two cars are heading at each other with the same speed v. The horn of one (f=3000Hz) is blowing,and is heard to have a frequency
2 answers
asked by
kabelo
548 views
An observer watching a fireworks displays sees the light from an explosion and hears the sound 2 seconds later how far was the
2 answers
asked by
joy
558 views
The sound intensity level at a concert increases from 85 dB to 94 dB
when the concert begins. By what factor has the sound
2 answers
asked by
amy
546 views
When a person wears a hearing aid, the sound intensity level increases by 35 dB. By what factor does the sound intensity
2 answers
asked by
Orla
545 views
A bat flying in a cave emits a sound and receives its echo 1 s later. How far away is the cave
wall?
2 answers
asked by
Anonymous
538 views
The sound level in decibels is typically expressed as β = 10 log (I/I0), but since sound is a pressure wave, the sound level
2 answers
asked by
maria
553 views
Find the number of decibels of sound produced by a jet engine at a distance of 50 metres if the intensity is 10 watts per square
2 answers
asked by
Donna
548 views
At a distance of 30 m the noise from the engine of an jet has an intensity of 130 dB.
At this level, you will be in pain and your
3 answers
asked by
Intensity
526 views
Elephants communicate via infrasound, at frequencies as low as 14 Hz that can travel up to 10 km. The intensity of these sounds
2 answers
asked by
May
537 views
plane’s sound detector perceives the horn’s sound, the plane has traveled a distance equal to one-half its altitude above
3 answers
asked by
Jack
533 views
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the
4 answers
asked by
Bala
537 views
Determine the change in intensity level (in decibels) when a sound intensity is increased by a factor of 2.0, 20, 200.
2 answers
asked by
Alex
533 views
An amplified guitar has a sound intensity level that is 11 dB greater than the same
unamplified sound. What is the ratio of the
2 answers
asked by
Orla
517 views
For an outdoor lab experiment a car has a loud device attached to the roof. This device emits beeps with a pitch of 400 Hz. The
2 answers
asked by
Anonymous
517 views
A train blows its horn as it approaches a crossing. The train engineer observes a frequency of 118 Hz and a stationary observer
2 answers
asked by
Paul
542 views
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the
3 answers
asked by
Bala
547 views
The speed of sound in air at 20 degrees C is 343m/s. This corresponds to a speed of ____mi/hr.
2 answers
asked by
Ajmber
522 views
The wavelength in air of the sound from a violin is 4.00x10⁻¹m. What is the frequency of vibration of the violin? (Ans:
4 answers
asked by
akon
513 views
A person in a field yells towards a canyon on a 10 C day. If it takes 2 s for them to hear their echo, how far away is the
2 answers
asked by
mk
505 views
A 60 man choir sings with the sound intensity of 70 dB in a 12m distance from the choir.
a) What is the average sound intensity
2 answers
asked by
Physics: Sound Intensity?
513 views
If Superman is flying at mach 4, 1 km above the ground and yells "Hey! Finish your test!" from directly overhead, what does it
5 answers
asked by
Gabby
515 views
8 of 158 of 15 Items
Question Which is an example of a sound without rhythm? (1 point) Responses a thunder clap a thunder clap
1 answer
asked anonymously
54 views
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