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Sound
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Questions (509)
The intensity of a certain sound at your eardrum is 0.0030 W/m^2. Calculate the rate P at which sound energy hits your eardrum.
5 answers
asked by
Patricia
4,517 views
At a busy street corner, the sound level is 75dB.
What is the intensity of sound there? (Take threshold of hearing
4 answers
asked by
Regina
2,917 views
Hans stands at the rim of the Grand Canyon & yodels down to the the bottom. He hears his yodel echo back from the canyon floor
10 answers
asked by
Taryn
9,204 views
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an
5 answers
asked by
Lola
2,748 views
A bat flying in a cave emits a sound and receives its echo 0.1 s later.
How far away is the cave wall? Assume the speed of sound
4 answers
asked by
Macie
3,838 views
The intensity due to a number of indipendent sound sources is the sum of the individual intensities.
A) When four quadruplets cry
5 answers
asked by
Amanda
4,401 views
John is listening to a horn. He knows the frequency of the horn is 300 Hz when both he and the horn are at rest. If he hears a
4 answers
asked by
Joan
3,299 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
4 answers
asked by
Tony
2,848 views
The loudness,
L L, of a sound (measured in decibels, dB) is inversely proportional to the square of the distance, d d, from the
4 answers
asked by
sam
7,220 views
imagine that you swinging backwards and forwards on a child's swing amd you are listening to music coming from a loudspeaker
4 answers
asked by
Mee
1,135 views
A piano tuner hears one beat every 2.0s when trying to adjust two strings, one of which is sounding 440 Hz. How far off in
4 answers
asked by
Remie
2,905 views
Find the number of decibels for the power of the sound given. Round to the nearest decibel.
A rocket engine, 2.68 cross product
3 answers
asked by
Viola
677 views
Please help me!
1) Karen shouts across a canyon and hears an echo 5.7 s later. How wide is the canyon? The speed of sound is 343
4 answers
asked by
Mikayla
2,016 views
If the intensity is increased by a factor 20,by how many decibel is the sound level increased
3 answers
asked by
krushna
1,032 views
Which of the following affects the speed of sound?
A. The amplitude of the wave. B. The frequency of the wave. C. The phase of
6 answers
asked by
Callie
3,204 views
A certain dog whistle operates at 23.5 kHz, while another (brand X) operates at an unknown frequency. If neither whistle can be
4 answers
asked by
Drew
3,350 views
A man yell's in a long canyon and waits for the echo to come back to him. It takes 3.0 seconds for him to hear the echo of his
4 answers
asked by
sammy
1,265 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
10 answers
asked by
safiya
3,099 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
3 answers
asked by
Ellie
1,807 views
an automobile is travelling towards you at a speed 25.0m/s. When you measure the frequency of its horn, you obtain a value of
3 answers
asked by
jason
670 views
A source of sound (1000 Hz) emits uniformly in all directions. An observer 3.19 m from the source measures a sound level of 39.2
4 answers
asked by
Anonymous
1,502 views
Sound intensity is inversely proportional to the square of the distance from the sound source; that is
I= k/(r)^2, where I is the
4 answers
asked by
Michelle HELP PLEASE
2,034 views
A tiny source emits sound uniformly in all directions. The intensity level ar a dist. Of 2m is 100dB. How much sound power is
4 answers
asked by
Dean
1,737 views
The speed of sound in air at sea level at 32 degrees Fahrenheit is 1088 ft/s. If that represents only 22.04% of the speed of
3 answers
asked by
Katy
809 views
You are watching a marching band practice outdoors. Near you are two trumpet players, one marching directly towards you and one
5 answers
asked by
Mathslover Please help
561 views
The distance between a loudspeaker and the left ear of a listener is 2.19 m. (a) Calculate the time required for sound to travel
5 answers
asked by
Tim
1,626 views
A bat flying at 5.0 m/s emits a chirp at 35 kHz. If this sound pulse is reflected by a wall, what is the frequency of the echo
4 answers
asked by
Elisa
1,638 views
Find the number of decibels for the power of the sound. Round to the nearest decibel.
A rock concert, 5.3 10-6 watts/cm2
4 answers
asked by
Deb
1,591 views
.Two automobiles are equipped with the same single-frequency horn. When one is at rest and the other is moving toward an
3 answers
asked by
Anonymous
1,841 views
How long will it take an echo to return across a canyon that is 61.0 m from one side to the other if the temperature is 25 C?
3 answers
asked by
Kayla
1,194 views
A train whistle emits a sound with a frequency of 1000 Hz when standing in the station. If the same whistle is blown when it is
3 answers
asked by
Anonymous
841 views
Can someone help me? I'm really confused.
The loudness L of a sound in decibels is given by L= 10log(base10)R, where R is the
7 answers
asked by
Ana
2,139 views
According to the information in the table, which of the following boys would hear a rock fall off of a cliff a kilometer away?
Re
2 answers
asked by
Anonymous ;)
134 views
A string of a musical instrument has a fundamental frequency of 196 Hz.What are the frequancies of the 2nd,3rd and 4th harmonics
3 answers
asked by
bona
445 views
Calculate the length of a closed organ pipe with a 680 Hz fundamental frequency. What is the wavelength of the 4th overtone?
4 answers
asked by
GINSENG
1,190 views
Why is an echo weaker than the original
sound? 1. The echo has a shorter wavelength than the original sound due to the
4 answers
asked by
hannah
1,621 views
a student plucks a guitar string and the vibrations produce a sound wave with a freuency of 650 hertz.
Calculate the wavelength
4 answers
asked by
Anonymous
1,617 views
A baseball coach shouts loudly at an umpire standing 3.6 meters away.
If the sound power produced by the coach is 2.2×10−3 W,
3 answers
asked by
Aj
863 views
A bell is rung at a sound intensity of 70dB . A trumpet is blown at an intensity that is greater by a factor of 10^3. What is
3 answers
asked by
Melissa
900 views
you are standing in a canyon. you shout and hear an echo 2 seconds later. what can you tell me about the width of the canyon?
3 answers
asked by
Regina
1,327 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
3 answers
asked by
maria
738 views
According to the information in the table, which of the following boys would hear a rock fall off of a cliff a kilometer away?
A.
3 answers
asked by
Heisenburger
158 views
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
When the temperature is
4 answers
asked by
Bri'yani Jolivet
114 views
The drilling of a jackhammer was measured at 131dB. The sound of whispering was measured at 28dB. (Note that log2=0.301). The
3 answers
asked by
help please
283 views
A parabolic microphone used on the sidelines of a professional football game uses a reflective dish 24 inches wide and 5 inches
3 answers
asked by
anonymous
1,269 views
sound travels through cold air at about 1190 kilometers per hour. that means that a sound can travel the length of three
3 answers
asked by
Cons
653 views
Sound from a 55dB horn is measured at a distance. What is the intensity of the sound in W/m2?
3 answers
asked by
Allan
1,416 views
Which is an accurate statement?
A high pitch will have a high amplitude. A low pitch will have a high frequency.<--- my answer A
2 answers
asked by
Sara
1,028 views
A loudspeaker emits energy equally in all directions at the rate of 1.75J/s. What is the intensity level at a distance of 15 m?
3 answers
asked by
Piyanshu
732 views
Find the number of decibels for the power of the sound given. Round to the nearest decibel.
A rocket engine, 2.37 x 10−5 (10 to
3 answers
asked by
leelee kay
456 views
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