0
[with the usual proviso that they were not a boilermaker, had congenital deafness ... ... .]
Thus one half of the population will have hearing more sensitive than this, and one half less sensitive. Ordinary speech is around the 55dB to 70dB.
Sounds greater than 85dB are considered to be damaging, if over an 8 hour period.
That is the sounds against which you'd have to raise your voice significantly to be heard at 600mm distance. At this level and above, you should be wearing hearing protection.
At levels above120dB you will start to feel pain. At levels above 130dB there will be instant damage.
[A fighter pilot's helmet is designed to shield as much of the hard tissue of the head from sound as possible, in order to prevent hearing loss. ]
What else can I help you with?
How much points are acceptable per 100 Square yards?
Infinitely many.
How much is a decibel?
A decibel (dB) has meaning only when compared a quantity (P1, V1, or I1) with a reference (P0, V0, or I0). Since it is a ratio of two like quantities, it is dimensionless. For a power ratio, power gain = 10 * log10(P1/Po) in [dB]. For a voltage ratio, voltage gain = 20 * log10(V1/Vo) in [dB]. For example, when P1 = 100 * P0, the power gain = 10 * log10(100) [dB] = 20 dB.
If a 99.79 kg man jumps from the top of a 176.8 meter tall building how long does it take for his body to decelerate to 0 ms once first contact with the ground is made?
It depends upon how much the ground deforms once the first bit of his body hits the ground, and how much his body deforms once the first bit of his body has hit the ground. The former is likely to be much less than the second (unless it is a specially designed landing area, say, for a stunt man jumping of a tall building where it will be designed to deform much more than the body of the stunt man so as to ensure there is near enough no traumatic stress on his body). It will be any time greater than 0 seconds, the the amount of time depends as above.
How much is 3 percent of human race?
About 200,000,000.
How many roentgens per hour is acceptable on a human?
The acceptable exposure limit for radiation on humans is typically around 0.1 roentgen per hour for continuous exposure, according to safety guidelines from organizations like the National Council on Radiation Protection and Measurements (NCRP). However, for occupational exposure, the limit may vary based on specific regulations and individual circumstances. It’s important to minimize exposure as much as possible to reduce potential health risks. Always consult relevant health and safety guidelines for specific situations.
How much krypton is in the human body?
there is no krypton in the human body
How much nerves are there in the human body?
There are billions of nerves in the human body.
How much reasons are cells and the human body alike?
The human body is composed of cells.
How much nerves does the human body have in total?
The human body has billions of nerves in total.
How much water does the human body contain?
The human body is made up of about 60 water.
How much nitrogen in the body?
The human body is about 3% Nitrogen
How much bones do you have in your bodys?
There are approximately 206 bones in the human body.
How much percent is oxygen in the human body?
Oxygen makes up about 65% of the human body by mass.
How much water makes up the human body?
The human body is made up of about 60 water.
How much skin is on a human body?
12.000
How much liquid is in the human body?
80%
How much potassiu is in the human body?
12
