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What element is NOT found in nature with 161 neutrons in period 7?
The element with 161 neutrons in period 7 that is NOT found in nature is astatine-215. Astatine-215 is a synthetic element that is artificially produced in laboratories and is not stable enough to exist in nature.
What is the atomic number of dubnium?
The atomic number of dubnium is 105. It is a synthetic element with the symbol Db.
How does this relate to the maximum permissible dose?
You cannot measure exactly the sound pressure level of the noise. It will change a bit. You cannot decide the allowable sound pressure level exactly on the minute. It depeds on the listening person. Some are more sensitive and some are less. "Permitted Exposure Time Guidelines - SPL" Sound pressure level Lp and permissible exposure time t: 115 dB = 0.46875 minutes (~30 sec) 112 dB = 0.9375 minutes (~1 min) 109 dB = 1.875 minutes (< 2 min) 106 dB = 3.75 minutes (< 4 min) 103 dB = 7.5 minutes 100 dB = 15 minutes 97 dB = 30 minutes 94 dB = 1 hour XXX 91 dB = 2 hours 88 dB = 4 hours 85 dB = 8 hours 82 dB = 16 hours Lower dBs are said to be harmless Accepted standards for recommended permissible exposure time for continuous time weighted average noise, according to NIOSH (National Institute for Occupational Safety and Health) and CDC (Centers for Disease Control and Prevention) in 2002. For every 3 dBs over 85dB, the permissible exposure time before possible damage can occur is cut in half.
What is the valency of Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium?
The valency of Rutherfordium (Rf), Dubnium (Db), Seaborgium (Sg), Bohrium (Bh), Hassium (Hs), and Meitnerium (Mt) is generally considered to be their group number in the periodic table, which is +4 for Rf, Db, Sg, Bh, and Hs, and +3 for Mt.
Moisture content in dry basis convert to wet basis?
To convert moisture content from dry basis to wet basis, use the formula: MCwet = (MCdry / (1 - MCdry)) where MCwet is the moisture content on a wet basis and MCdry is the moisture content on a dry basis. For example, if the moisture content on a dry basis is 10%, the moisture content on a wet basis would be 11.1%.
What is the atomic mass of dubnium?
The atomic mass of dubnium (Db) is approximately 268. It is a synthetic element with an atomic number of 105.
How many DB is Mach1?
The sound of Mach 1 is around 130 dB.
How many times louder is 80dB compared to 40dB?
80 dB is 10 times louder than 70 dB, and 70 dB is 10 times louder than 60 dB, and so on. Therefore, 80 dB is 1000 times louder than 40 dB.
Combien de db sont produits dans une disco?
How many db is produced in a disco
If the transmit voltage is increased by a factor of 100 how many dB has the power been increased?
2 db's.
Normal speech measures 60 dB A busy street measures 70 dB How many times louder is the busy street than normal speech?
70 dB is 10 times louder than 60 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
25dB equal to how many watts?
That depends on you. If you want, you can say 1 watt should be 0 dB.
How many times more intense is a 90 dB sound than a 60 dB sound?
A 90 dB sound is 1,000 times more intense than a 60 dB sound. This is because the decibel scale is logarithmic, with every 10 dB increase representing a tenfold increase in intensity.
Compared to a close whisper at 20 dB. How many times more intense is a normal conversation at 60 dB?
A normal conversation at 60 dB is 1,000 times more intense than a close whisper at 20 dB. This difference is due to the logarithmic nature of the dB scale, where each 10 dB increase represents a tenfold increase in intensity.
How many db's can you have I am football?
Spongebob square pants
How many decibels are in your pain threshold?
That depends on the listening person. 120 dB will bring you pain.
