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What else can I help you with?
How loud is 69 db?
A noise level of 69 dB is considered to be moderately loud, similar to the noise level of a vacuum cleaner. It is not harmful in short durations but prolonged exposure can cause hearing damage over time. It is important to use ear protection in environments where the noise level exceeds 85 dB.
How loud is 78 db in relations to everyday sounds?
its about the same as the dial tone on a phone
Do you need to earth a DB board?
Yes, it is essential to earth a Distribution Board (DB) to ensure safety and protect against electrical faults. Proper earthing helps in dissipating excess electrical current to the ground and prevents electric shock hazards. It also aids in protecting electrical equipment from damage due to power surges.
The human perception of sound intensity is called?
The human perception of sound intensity is called loudness. Loudness is influenced by the amplitude or energy of the sound wave and is measured in decibels (dB).
What is the loudest man made noise?
The loudest noise ever was the eruption of a volcanic island in the Pacific Ocean. The island of Krakatoa in Indonesia that erupted in 1883. The island blew a apart and caused a major tsunami.
How much dB you can hear by your ears?
You can start to hear at the threshold of hearing at 0 dB and end up at the threshold of pain at 137.5 dB.
How many dB of attenuation translates into 50 percent of the voltage being lost to attenuation?
db=20log(V1/V2) or 10log(P1/P2) Example: db=20log (100/50) db=20log(2) db=20*.3010 db=6.02
How loud is 45 - 50 decibels?
The sound pressure of 45 dB is about a quiet library and 50 dB is about an everage home.
What is 45 percent in decibels?
100 percent is 0 dB.50 percent is - 6 dB.45 percent is -6.935749724 dB.10 percent is - 20 dB.
What is the number of decibels a human being can hear?
The average human can hear sounds ranging from 0 dB (threshold of hearing) to around 120 dB (threshold of pain). However, the range of comfortable hearing is typically between 20-70 dB for most people.
How much louder is a sound wave that has an intensity of 50 dB than a sound wave with an intensity of 20 dB?
The power in the wave is [ 30 dB = 1,000 times ] greater.
Human capacity to hear sound measured in Hertz?
measeured in desibel dB
What decibel range can a human hear in?
We can hear from 0 dB, that is the threshold of hearing up to 130 dB that is the threshold of pain.
How far would you have to be to get a reading of 60 dB when standing outside 15 m away from a boombox the intensity level was measured at 80 db?
A reduction of 20 dB corresponds to increasing the distance from the sourceby a factor of 10.So you have to back off to 150 meters in order to reduce the sound level to 60 dB.
What sound level is dB is required for a 1 sone loudness at frequency 50 Hz?
The sound level in decibels (dB) required for a 1 sone loudness at a frequency of 50 Hz would be around 40 dB. This is because 1 sone is approximately equal to 40 phons, and for a 50 Hz tone, 40 phons is equivalent to around 40 dB SPL (Sound Pressure Level).
How loud are sound waves?
The loudness of sound waves is measured in units called decibels (dB). The range of decibels humans can typically hear without discomfort is around 0 dB to 120 dB. Sounds above 120 dB can cause hearing damage.
How many decibels is quiet conversation?
20 to 50 decibels (dB).
