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1dB = 8.86N
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What is relationship between dry density and moisture contents?
Dry density (DD) is related to the moisture content (MC) using the following: DD = DB / (1+MC) Where DB is the bulk density of the material.
What is the dB value for a gain of 10?
10dB It is a logarithmic relationship, so a gain of 20 is 13dB, and a gain of 100 is 20dB
If transmitter power is increased from 200 Watts to 400 Watts how do you convert to Db form?
Decibels (db) is relative power, log base 2, times 3. Increasing power from 200 watts to 400 watts is doubling power, so the decibel change is +3 db.800 watts would be +6 db, 1600 watts would be +9 db, 100 watts would be -3 db, 50 watts would be -6 db, and so on.
Prove dbm plus dbm equals db?
The decibel scale is a logarithmic scale where each change in three dB represents a power factor change of two. (3 dB is power times two, 6 dB is power times four, 9 dB is power times 8, etc. Similarly, -3dB is power divided by two, -6 dB is power divided by four, etc.) Zero dB is assigned some arbitrary reference power. One example is 1 mV across 600 ohms. If you double the voltage into a constant resistance, the power quadruples, so 2 mV would be +6 dB, 4 mV would be +12 dB, etc. The letter after dB is the reference power. In the case of dBm, it means that 0 dB is 1 milliwatt, so 2 milliwatt is +3 dB, etc. There are many dB scales, such as dBa, used in sound measurements. Still, fundamentally, 3 dB is a doubling of power, -3 dB is a halving of power, so, for any arbitrary scale, say dBq, then saying +6dBq is saying a power four times higher than 0 dBq. In the end, dBm plus dBm is delta dB, with no scale.
How loud is 60 db?
60 dB sound pressure level is about conversational speech listened in 1 meter distance.
What is Neper?
1 neper = 8.6858896381 decibel.
What is a neper?
1 neper = 8.6858896381 decibel.
What is relationship between dry density and moisture contents?
Dry density (DD) is related to the moisture content (MC) using the following: DD = DB / (1+MC) Where DB is the bulk density of the material.
What is the relationship between current flow and magnetic poles?
as an eclectic current flows, a small amount of magnetism is generated. when a magnet spins, a small amount of electric current is produced. it is a very complicated correlation. go to Google to read an expert- written article.
What is sound attenuation expressed in?
Neper/meter
Who was the Egyptian God of wheat?
There is no Egyptian god of wheat, however there is an Egyptian god of grain. The name of this god was 'Neper'. He was sometimes called 'Neper the reaper' because of his association with grain and harvesting.
What is the difference between dB HL and dB SPL?
dB HL stands for decibel Hearing Level, and dB SPL stands for decibel Sound Pressure Level.
What is the difference between directed antenna and parabolic dish?
about 40 db about 40 db
What is the guitar tuning for Linkin Park in between?
Db Ab Db Gb Bb Eb
What does Dw db mean in acoustics?
Dw. db means weighted amount variance between rooms in acoustics. db is actually short for decibel, the unit for sound.
What does one calculate dB power?
This calculation will give you the ratio, in decibels, between two power values. For example, you can calculate the difference in dB between two amplifiers with different power output specifications calculate in dB Power Ratio.
What are the decibel levels for the hearing impairment classifications?
It is important to understand that a decibel is just a unit of measure that is used to determine loudness of a sound or amount of hearing loss. Normal hearing is found between 0 and 25 dB in adults. For children, 0 - 20dB. Mild hearing loss is found between 26 - 40 dB in adults. For children, 21 - 40dB. Moderate loss if found between 41 - 55 dB in both. Moderately severe if found between 56-70 dB in both. Severe if found between 71 - 90 dB in both Profound if found 90 dB or greater in both
