Does a heart make decibels? Never heard a heart.
Between 1 and 20db
43db
Decibels are a logarithmic way of expressing a magnitude, megahertz is a frequency. Specifically, 1 megahertz = 10^6 cycles/second There is no answer to the question.
That depends how close you measure to the mouth of the human speaker. The closer - the louder! The distance is very important if you measure with a sound pressure level meter. At 1 meter distance the speaker may be measured at 60 decibels SPL.
Pin dropped from a height of 1 centimetre heard at a distance of 1 meter would be ~15dB
That depends how close you measure to the mouth speaker. The closer - the louder! The distance is very important if you measure with a sound pressure level meter. A conversation in 1 meter distance may have 60 decibels.
There are 10 decibels in 1 Bel. The Bel is a logarithmic unit used to compare the ratio of two power levels, with the decibel being a more commonly used fraction of the Bel.
1 bel = 10 decibels
The difference in power levels between 1 watt and 3000 watts is 10*log10(3000/1) = 31.76 decibels.
Deafness is more or less caused by damage or a defect in the tympanic membrane (the eardrum), such as the membrane being ruptured by blunt force or a loud noise (130 + decibels) like that of a space shuttle take off.
A dog's bark typically ranges from 60 to 110 decibels, depending on the size and breed of the dog.