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Which of the following frequencies can be heard by the human ear -- a. 0.1 Hz b. 10 Hz c. 1000 Hz or d. 100000 Hz?
Wiki User
∙ 8y ago
1000 Hz. The others are outside the range of human hearing. You can feel 10 Hz but not hear it. C. 1,000 Hz
Wiki User
∙ 8y ago
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What is sonar frequency?
The frequencies on which sonar is used vary widely. Human hearing is usually cited as ranging as from 20 cycles per second (Hertz) to 20,000 cycles per second. There are many sonars that use frequencies in the 20 to 20,000 Hertz range. In general, the sonars that are used for short range underwater applications operate on a slightly higher frequency than those that are designed to look over long distances. But there are a lot of sonars which use frequencies far outside the range of human hearing. Medical imaging is the most popular use of sonar. The range of frequencies used by these devices range from 2 million cycles per second to 18 million cycles per second. These frequencies are far above what humans can hear.
Does the average human blink more or less than 100000 times a day?
The average human blinks about 15-20 times per minute, which adds up to approximately 14,400-19,200 times per day. Therefore, the average human blinks significantly less than 100,000 times a day.
A truck explodes downtown during rush hour near a government building There are more than 100 casualties Many more victims are being treated for minor injuries In the days following the explosion?
It would be investigated as possible terrorism because it was near a government building in the days following.
What is the earth's frequency?
From the following page:http://en.wikipedia.org/wiki/User:Oldspammer/Robert_C._Beckwe have the following information: Robert C. Beck performed his own research on electro-stimulation of the healing process and found that the human body has numerous very specific frequencies at which production of different endorphins, beta-endorphins, catecholamines, enkephalins, dynorphins, proteins, and stem cells were triggered.Beck used an HP spectrum analyzer and attached it to instrumentation amplifiers that were connected to human subjects in order to measure brain wave activity both with and without external stimulation. Beck claimed that the brain appeared to have a high-Q factor of about 3000 for frequency selectivity. Via his own research and that of others, Beck determined that about 250 different frequencies were key in triggering the body to produce its own healing chemicals. Beck studied about 150 different brain wave stimulation devices, and their effects experimentally. He studied the 'executive chimp' study (involving stressed animals). He designed the Brain Tuner black box electrode device to produce these frequencies simultaneously.Through further research on various people claiming mystical powers, Robert C. Beck found that these people for brief instances of a few seconds at a time generated brain waves in frequency between alpha and theta waves, in sympathy with the 7.83 Hertz-earth resonance frequency (see ELF, Binaural beats, Schumann resonance). He found that nearly none of people claiming mystical powers were without this phenomenon, and that the ones without it were probably faking their mystic abilities. From the following page http://en.wikipedia.org/wiki/Schumann_resonance we get the following information:The Schumann resonance (SR) is a set of spectrum peaks in the extremely low frequency (ELF) portion of the Earth's electromagnetic field spectrum. Schumann resonances are global electromagnetic resonances, excited by lightning discharges in the cavity formed by the Earth surface and the ionosphere. This global electromagnetic resonance phenomenon is named after physicist Winfried Otto Schumann who predicted it mathematically in 1952. Schumann resonance occurs because the space between the surface of the Earth and the conductive ionosphere acts as a waveguide. The limited dimensions of the Earth cause this waveguide to act as a resonant cavity for electromagnetic waves in the ELF band. The cavity is naturally excited by energy from lightning strikes. Schumann resonances are observed in the power spectra of the natural electromagnetic background noise, as separate peaks at extremely low frequencies (ELF) around 8, 14, 20, 26 and 32 Hz.
What coninent is the population ''zero''?
Antarctica basically has no permanent human population.Antarctica basically has no permanent human population.Antarctica basically has no permanent human population.Antarctica basically has no permanent human population.
What range of frequencies can be heard by a human?
Hearing Range of frequencies for humar ears if from 20 Hz to 20,000 Hz.
What is the lowest frequency?
The lowest frequency is 10 Hz. A human can hear frequencies from 20 Hz to 20,000 Hz. Some frequencies can be felt rather than heard.
Which frequencies of wave in the air can be heard as an audible sound by the human ear?
from about 100 cps to about 16,000 cps (young people only).
Describe infrasonic and ultrasonic waves and explain why humans can not hear them?
The human ear cannot detect all possible frequencies. It has evolved to detect frequencies of sounds that are the most useful to humans, and has a maximum frequency range of about 20Hz to 20kHz, which decreases as you get older, particularly at the higher end. Infrasonic describes sounds that are too low in frequency to be heard by the human ear, and ultrasonic describes sounds that are too high in frequency to be heard by the human ear. These sounds cannot be heard by the human ear because they are outside of its range of capability.
What are sound waves with frequencies above the normal human range of hearing?
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
Sound waves with frequencies above the normal human range of hearing are called what?
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
What is something human cnt hear?
Some sounds that are at certain frequencies cannot be heard by a human ear. Some such sounds are a dog whistle, certain whale songs and dolphin and bat echolocation.
Would frequencies (Hz.)of the human body be religeous and spirituality frequencies?
No, that is completely unrelated.
Which one of the following frequencies of a wave in the air can be heard as an audibke sound by the human ear?
The human ear can detect a wide range of frequencies. The lowest frequencies are around 16 to 20 Hertz while the highest can be as much 20,000 Hertz. As we get older, our high frequency limit tends to reduce so an older person may only hear sounds up to around 15,000 Hertz.
How much does the human brain remember?
over 100000
What are ultra sonic frequencies?
Audio (sound) frequencies above the range of the human ear. This is generally said to be above 20,000 hertz.
Frequencies below the range audible to the human ear are classified as?
Infrasonic
