Questions LLC
Login
or
Sign Up
Ask a New Question
Acoustics
Page 4
Questions (353)
A) As a wind instrument warms up, the resonant frequencies of the instrument tend to slightly decrease.
B) If the air in a
3 answers
asked by
J
976 views
A 1289 Hz sound from the speaker enters a tube at point A.
It then takes two paths, ACD or ABD. Minimum sound is heard when ACD
1 answer
asked by
Tom
949 views
The speed of sound in air is about 330m/sec. If a lighting flash occurs 5.5 seconds before you hear the thunder how far away
4 answers
asked by
Rose Victory
935 views
Jill screams and hears her echo 4.4 seconds later. How far from the canyon wall is she if the air temperature is 25 degree C?
3 answers
asked by
Stephanie
921 views
When a metal pipe is cut into two pieces, the lowest resonance frequency in one piece is 244Hz and that for the other is 454Hz.
1 answer
asked by
Laura
934 views
What happens when two speakers of a stereo are brought face to face? Why
1 answer
asked by
Anonymous
879 views
Two identical guitar strings under 108 N of tension sound tones with frequencies of 528 Hz. The peg of one string slips
2 answers
asked by
Jeanette
910 views
Please help I cant breath with this qn, due today exam pending, thanks for taking your time to help.
The human outer ear contains
2 answers
asked by
chiongo
907 views
A bat flying in a cave emits a sound and
receives its echo 0.4 s later. How far away is the cave wall? Assume the speed of sound
2 answers
asked by
amber
871 views
Discuss what happens when a man fires a pistol in front of a flight of stairs in a large hall.
2 answers
asked by
victoria
831 views
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from
1 answer
asked by
Anonymous
837 views
A jet airplane has an intensity of 109.7 W/ m2 when heard at a distance of 26.8 m. What is the maximum sound intensity heard by
2 answers
asked by
Jill
795 views
an open tube is .86m long. Find the fundamental frequency and frequency of the next harmonic if the Temp=10deg celcius also if
2 answers
asked by
shan
802 views
Part One:
The decibel level of the noise from a jet aircraft is 130 dB when measured 19.3 m from the aircraft. How much sound
9 answers
asked by
Lyndsay
814 views
Airplanes are noisy things. For example, if you stand really close to a runway, a military jet can produce a sound intensity of
1 answer
asked by
Steve
779 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.
(
2 answers
asked by
Justin
761 views
1) Sound propagating through air at 30 degree Celsius passes through a vertical cold front into air that is 40 degree Celsius.
3 answers
asked by
Sandhya
754 views
Suppose that a public address system emits sound uniformly in all directions and that there are no reflections. The intensity at
1 answer
asked by
Anonymous
740 views
A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver of the lead car becomes
2 answers
asked by
Tony
776 views
An underwater micriphone is used to record sounds emitted by porpoises. The minimum intensity level the instrument can record is
1 answer
asked by
rory
706 views
A CAR IS TRAVELING AWAY FROM YOU AT 70.0 MI/H. THE CAR HORN PRODUCES A SOUND AT A FREQUENCY OF 5000HZ. WHAT FREQUENCY DO YOU
4 answers
asked by
~ALICE~
709 views
The sixth harmonic of a 70 cm long guitar string has a frequency of 557.14 Hz. What is the velocity of sound in the guitar
2 answers
asked by
ashley --
709 views
A tuning fork creates sound wave with frequency of 170 hertz. If the speed of sound is 340 m/s, what is the wave length of the
2 answers
asked by
Christopher
707 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
Effects of humidity on speed of sound.
2 answers
asked by
Chris
629 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
649 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
1 answer
asked by
Justin
640 views
In this sound interferometer, sound waves enter at A and travel to C via paths ABC and ADC. the intensity of the sound can be
1 answer
asked by
Claudia
648 views
A hammer taps on the end of a 3.32 m long metal bar at room temperature. A microphone at the other end of the bar picks up two
2 answers
asked by
Anonymous
636 views
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions.
1 answer
asked by
David Egan
621 views
What are the first, second, and third frequencies audible from a 20 cm long organ pipe when (A) only one end is open and when
1 answer
asked by
Kelsey
655 views
How many beats will be heard if two identical flutes each try to play middle c (262 Hz), but one is at 5.0 Celsius and the other
1 answer
asked by
Mike
630 views
A bat flying in a cave emits a sound and receives its echo
0.1 s later. Show that the distance to the wall of the cave is 17 m.
2 answers
asked by
Scott m
637 views
Five people talk simultaneously. If the intensity level is 70 dB when either one speaks alone, what is the intensity level when
2 answers
asked by
Abby
623 views
A hammer taps on the end of a 4.20 m long metal bar at room temperature. A microphone at the other end of the bar picks up two
2 answers
asked by
Gavin
603 views
If a piano tuner hears 3 beats each second when listening to a 8 Hz tuning fork and a single string on the piano which is of
1 answer
asked by
Paul
605 views
A hammer taps on the end of a 8.13m long metal bar at room temperature. A microphone at the other end of the bar picks up two
2 answers
asked by
rory
589 views
If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees?
2 answers
asked by
Amber
564 views
A tube with a length L is closed at both ends and is filled with air. The wavelength of the fundamental mode of this tube is
3 answers
asked by
George
571 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
2 answers
asked by
Justin
563 views
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of
1 answer
asked by
Jena
579 views
Sound waves travels faster in wood than in air or water.why?
3 answers
asked by
Woto
574 views
A radio acoustic sounding system (RASS) instrument uses 404-MHz radio waves (wavelength = 0.743 m).
(a) What is the wavelength of
2 answers
asked by
Melody
585 views
A loudspeaker is placed between two observers who are 111 m apart, along the line connecting them. If one observer records a
2 answers
asked by
Linda
569 views
If a jogger runs at the speed of sound, can he still hear his iPod?
This is a serious question.
4 answers
asked by
Kaylee
554 views
You drop a rock into a deep well. You can't see the bottom of the well but you can hear the impact after T seconds. Suppose the
2 answers
asked by
Jamie
562 views
The coldest and hottest temperatures ever recorded in the United States are -83°F and 135°F, respectively. What is the speed
2 answers
asked by
Jeanne
559 views
Consider the resonant frequencies of a 1.78 m tube closed at one end at 24°C.
a) Lowest resonant frequency = Hz HELP: You know
2 answers
asked by
Angel
551 views
1.) The average sound intensity inside a busy neighborhood restaurant is 3.*10^-5 W/M^2. How much energy goes into each ear
2 answers
asked by
David
547 views
Consider a pipe with a length of 57.5 cm. If the temperature of the air is 21.5degrees C and the pipe is closed in one end and
3 answers
asked by
Idali
555 views
Pages
1
2
3
4
5
6
7
8
Parent Categories (14)
Engineering
Mechanics
Physical Science
Physics
Pitch
Science
Science and Technology
Science/Technology
Sound
Sound Engineering
Sound waves
Waves
Waves and Sound
Waves and Vibrations