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Waves and Sound
Page 3
Questions (295)
to increse intensity o f a wave by a factor of 50, by what factor should the amplitude be increased?
3 answers
asked by
mason
1,347 views
A policeman in a stationary car measures the speed of approaching cars by means of an ultrasonic device that emits a sound with
4 answers
asked by
Bhodloza
1,617 views
A student witnesses a flash of lightning and then t = 6.5 s later the student hears the associated clap of thunder. Sound
3 answers
asked by
joe
1,163 views
An ultrasonic motion sensor sends very short pulses for ultrasound to measure the distance to an object . The sensor cannot send
2 answers
asked by
sharon
595 views
I am stuck with both of these questions. Thanks in advanced!
1. If one tone has a frequency of 110 Hz and another tone is played
3 answers
asked by
Liz
530 views
The sound level when one child is talking in a room is 60.0 dB. What would be the sound level if all 20 children talk at the
2 answers
asked by
bano
593 views
what is happening to sound waves as they enter different mediums?
I believe that they decrease in sound and length.
3 answers
asked by
Nikki
357 views
You are playing a note that has a fundamental frequency of 440.00 Hz on a guitar string of length 59.1 cm. At the same time,
2 answers
asked by
mican
682 views
In the experiment Standing Waves,if you continue to lwer the water level after recording l(m) at the first sound resonance at
3 answers
asked by
khadijah
583 views
How does the wavelength of a sound wave change as the source of the sound approaches or moves away from the listener?
2 answers
asked by
:)
481 views
At a factory, a noon whistle is sounding with a frequency of 484 Hz. As a car traveling at 77 km/h approaches the factory, the
1 answer
asked by
kira
479 views
Can someone tell me how to get the answer to this question? Just a formula would be great. It's on my physics study guide for my
1 answer
asked by
Diana
323 views
A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm.
(a) What is the speed of the
1 answer
asked by
Megan
462 views
Bat is flying 5m/s while chasing an insect that is flying in the same direction. The bat emits 40kHz chirp and hears a 40.4kHz
3 answers
asked by
Jake
1,535 views
You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which
13 answers
asked by
sara
614 views
You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which
1 answer
asked by
sara
418 views
how do you find beat frequency?
1 answer
asked by
sara
312 views
A partially open window presents an opening 20cm wide.
What kind of sounds from outside will go across the room in a well-defined
1 answer
asked by
AAAA
654 views
The tip of a 2.5m diameter propeller turns with a Mach number of M = 0.8 at sea level, under ISA conditions. Determine the
3 answers
asked by
shawon
46 views
Part 1
A 3m long pipe is in a room where the temperature is 20 degrees C. What is the frequency of the first harmonic if the pipe
2 answers
asked by
Megan
1,216 views
The siren in an ambulance has a frequency (according to you) of 1100 hz as it moves towards you at a speed v. It then makes a
2 answers
asked by
J Velji
757 views
Could someone provide me with a simple explanation of how the Doppler Effect is used to determine the speed and direction of
1 answer
asked by
Julia
472 views
Could someone provide me with a simple explanation of how the Doppler Effect is used to determine the speed and direction of
1 answer
asked by
Julia
326 views
At a height of 5 meters above the surface of a freshwater lake, a sound pulse is generated. The echo from the bottom of the lake
2 answers
asked by
Alan
551 views
By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?
1 answer
asked by
Molly
334 views
A guitar player plucks two strings simultaneously. One string is tuned to a (fundamental) frequency of 381 Hz. It is found that
2 answers
asked by
Rachel
505 views
An open pipe 0.40m in length is placed vertically in a cylindrical bucket having a bottom area of 0.10 m^2. Water is poured into
2 answers
asked by
Garry
539 views
sound travels at 350 m/s in warm air. "If you hear the echo in 10 seconds, how far away is the reflecting surface?
3 answers
asked by
lisa
774 views
You're standing by the roadside as a truck approaches, and you measure the dominant frequency in the truck noise at 1105Hz . As
2 answers
asked by
Mike
559 views
what is the loudness of sound called?
4 answers
asked by
Lisa Camp
418 views
Two loudspeakers are placed 3.00m apart. They emit 485 Hz sounds, in phase. A microphone is placed 3.20m distant from a point
1 answer
asked by
Taylor
1,005 views
A 2.50-kg Pendulum is attatched to a string 11.4m stringis pulled aside until it is.386m above its lowest position and released.
3 answers
asked by
Moe
1,077 views
A car moving at 16.0 m/s, passes an observer while its horn is pressed. Find the difference between the frequencies of sound
4 answers
asked by
sophie
1,513 views
two tuning forks are struck at the same time. One tuning fork has a frequency 20hz while the second tuning fork has afrequency
2 answers
asked by
Rosemary
775 views
It's a simple problem I think but I can't get the answers to match with the book.
A particle fingering flute sounds note with
3 answers
asked by
~christina~
534 views
A 3.00 kHz tone is being produced by a speaker with a diameter of 0.175 m. The air temperature changes from 0 to 29°C. Assuming
1 answer
asked by
Papito
766 views
A 3.00 kHz tone is being produced by a speaker with a diameter of 0.150 m. The air temperature changes from 0 to 29°C. Assuming
1 answer
asked by
Mary
757 views
I'm not sure how to go about answering this question... I have all these equations and none seem to apply. The question is:
If
2 answers
asked by
Nikki
525 views
How long does it take for sound to travel around the world ?
5 answers
asked by
Slim
5,245 views
A solid copper object hangs at the bottom of a
steel wire of negligible mass. The top end of the wire is fixed. When the wire is
3 answers
asked by
Rachel
3,091 views
A bell with a fundamental frequency of 880 Hz is moving toward an observer at 3.5 m/s. If the speed of sound is 343 m/s, what
3 answers
asked by
Jenn
2,359 views
Two small stereo speakers A and B that are 1.40m apart are sending out sound of wavelength 33.5cm in all directions and all in
2 answers
asked by
Avantika
1,821 views
A shout down a well produces an echo in 2.00 seconds. How deep is the surface of the water in the well? Assume the speed of
4 answers
asked by
kennera
1,816 views
What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength?
3 answers
asked by
Jason
1,675 views
A sound wave is traveling in warm air when it hits a layer of cold, dense air.
If the sound wave hits the cold air interface at
3 answers
asked by
melissa
1,532 views
A guitar string of length 30 cm and stretched under a tension of 78 N has a certain fundamental frequency. How long would a
2 answers
asked by
Jason
1,558 views
A student witnesses a flash of lightning and then t = 6.5 s later the student hears the associated clap of thunder.
Sound travels
3 answers
asked by
joe 10
1,443 views
suppose that the separation between speakers A and B is 5.80 m and the speakers are vibrating in phase. They are playing
1 answer
asked by
Mary
1,366 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
Jen
1,291 views
For a resonance tube apparatus (open ended on one side) with a total tube length of 1.00 meter, on a day when the speed of sound
1 answer
asked by
Rob
1,299 views
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Parent Categories (4)
Physical Sciences
Physics
Science and Physics
Trigonometry