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Sound Waves
Sound waves are a mechanical oscillation of pressure. It is a series of vibrations that can be heard.
604 Questions
If an A is 440 hz how many hz is an e?
12 half-tones = 1 octave = double the frequency
1 half tone = multiply frequency by the 12th root of 2 = 1.0594631 (rounded)
'E' above 'A' is 7 half tones above 'A'.
Frequency of 'E' above = (440) x (2)7/12 = 659.3 Hz.(rounded)
'E' below 'A' is 5 half tones below 'A'.
Frequency of 'E' below = (440) divided by (2)5/12 = 329.6 Hz . (rounded)
Notice that, by golly, the frequencies we calculated for 'E' above and 'E' below
are in the ratio of 2 to 1 . . . they're an octave apart, just as we would hope.
What is the example problem of sound waves?
One example problem involving sound waves could be calculating the frequency of a sound wave given its wavelength and the speed of sound in a medium. This can be done using the formula: frequency = speed of sound / wavelength.
The speed of a wave is given by the equation speed = frequency x wavelength. If a 340 Hz sound wave travels at 340 meters per second, then its wavelength is 1 meter (Option D) because 340 Hz x 1 m = 340 m/s.
Steel in a bridge is most likely to transmit sound the best due to its denser and firmer structure. Water in a swimming pool would also transmit sound well due to its density and lack of air pockets. Water in the ocean can transmit sound effectively due to its consistency and depth, although it can also be influenced by temperature and salinity. Wood in a cabinet may absorb some sound due to its porous nature, while air in a classroom is the least effective medium for transmitting sound due to its low density and compressibility.
Can ocean waves move faster than wind?
No, ocean waves cannot move faster than the wind that generates them. Waves are a result of the energy transferred from the wind to the water's surface, so they generally travel at a speed proportional to the wind speed.
Can humans hear the sounds from elephants under normal circumstances. Why or why not?
No, humans cannot hear the sounds made by elephants under normal circumstances. Elephants produce low-frequency infrasound vocalizations that are below the range of human hearing. However, elephants can communicate with each other over long distances using these infrasound frequencies.
Find the frequency of a sound wave that has a wavelength of 1.5 meter. Could you hear this sound?
To find the frequency, use the formula: frequency = speed of sound / wavelength. Assuming the speed of sound is 343 m/s, the frequency of the sound wave would be approximately 229 Hz. Yes, this frequency is within the audible range for humans, so you would be able to hear this sound.
When a steadily flowing gas flows from a larger diameter pipe to a smaller diameter pipe the speed of gas is decreased and pressure become increased and the spacing between the streamlines less and the streamlines come very close to each other.
Sound propagates as a disturbance in air pressure. The movement of the gong first pushes air particles out of the way, creating a region of high pressure, but then moves back in the other direction, creating a region of low pressure, which the air particles move back to fill. So, air particles do move locally as the pressure changes, but there is no net transport of air. The energy in the wave is carried forward as a moving change in pressure. This change in pressure is detected by your ears.
One can make a loose analogy with surface waves on water. Drop a pebble into a still pond. Waves will propagate outward from the point of contact, where water was initially displaced. The water waves propagate outward as the height of the water changes at each point, yet there is no net flow of water.
How are bats able to fly without bumping into anything if they can't see?
They use echolocation. They have an extremely highly developed ability to detect echoes from high pitched sounds that they emit. They are so skilled that they can locate and catch flying insects while they themselves are flying. They are well adapted to their habitats, and even if they could know what vision is, it wouldn't occur to them that they are worse off because they don't have it.
Is it possible to break bullet-proof glass with your voice?
It is theoretically possible to break bullet-proof glass with a loud sound, but it would require a sound level significantly higher than what the human voice is capable of producing. The glass is designed to withstand impacts and is highly resilient to shattering.
Why do some coins ring and others not?
Coins are made of different metals.Metals have their own characteristic modulus of elasticity.Due to this modulus(here Young's modulus)different metals have different frequency of vibration.some rings clearly and some others are low in sound.
What does absorbing a sound mean?
Absorbing a sound means reducing its intensity or volume by converting the sound energy into another form, such as heat or vibration. Materials like foam, carpets, and acoustic panels are commonly used to absorb sound waves by dampening their strength and reducing their reverberation.
What does lurched mean to do with waves?
not normally connected with waves. A sudden tip or roll to one side is a suggestion, although is more applies to a ship or a staggering person. It is an act of swaying abruptly, perhaps waves do that.
Why is lead a soundproofing material?
Lots of mass (very low resonant frequency)
Low stiffness (very high co-incident frequency)
All materials have both a resonant and co-incident frequency, at which sound is transmitted more efficiently. Materials where these frequencies occur outside of the range of hearing (20 - 20,000 Hz) are better for sound proofing.
With lead, the resonant frequency is below 20Hz and the co-incident frequency is about 20,000Hz.
Does sound travels the fastest in air?
Speed of sound (M/Sec):
Sea water at 0C: 1450
Sea water at 20C: 1522
Sea water at 30C: 1545
Butyl rubber/carbon (100/40): 1600
Neoprene: 1510
Neoprene/carbon (100/60): 1690
Rubber (natural): 1600
So, on the whole, sound is slightly faster in rubber
What scale does the decibel go up in?
The decibel scale is logarithmic, with each increase of 10 decibels representing a tenfold increase in sound intensity. This means that a sound at 20 decibels is 10 times more intense than a sound at 10 decibels, and a sound at 30 decibels is 100 times more intense than a sound at 10 decibels.
What is the most familiar kind of surface wave?
The most familiar kind of surface wave is an ocean wave, which is caused by the wind transferring energy to the water's surface. These waves can vary greatly in size and strength, depending on factors such as wind speed and duration.
What will happen to the loudness of a sound if the surface area of the vibrating body is decreased?
If the surface area of the vibrating body is decreased, the loudness of the sound will also decrease. This is because less energy is being transferred to the surrounding air, resulting in a quieter sound.
What frequency range of light is visible?
The visible light spectrum ranges from approximately 400 to 700 nanometers in wavelength, corresponding to a frequency range of about 430 to 750 terahertz. This spectrum includes the colors of light that human eyes can perceive, from violet to red.
What happens to the energy of a sound wave if it is absorbed by a fabric?
Seeing as nobody has answered I will.
Im not entirely sure so double check with a physics teacher but
once its absorbed the fabric slightly heats up. like 0.0005 degrees.
When absorbed reflection of sound is prevented.
Is high pitch close together spacing in sound waves?
High pitch sounds are typically associated with closely spaced sound waves. In general, high frequency sound waves have shorter wavelengths and closer wave crests, leading to a higher perceived pitch. Conversely, low pitch sounds have longer wavelengths and greater spacing between wave crests.
What is frequency applied to sound waves?
Frequency applied to sound waves refers to the number of cycles or vibrations that occur within a specified time frame. It is measured in Hertz (Hz) and determines the pitch of the sound produced - higher frequency results in higher pitch, while lower frequency results in lower pitch.
