That depends how close you measure to the elephants mouth. The closer - the louder! The distance is very important if you measure with a sound pressure level meter.
207 decibels.
Asian elephants produce about 100 to 500. Africans are similar.
One at a time..the gestation period is very long. The elephant's gestation period is 22 months, the longest of any land animal. At birth it is common for an elephant calf to weigh 120 kilograms (265 lb). That would mean that ,technically, they could have an baby elephant every 2-2 1/2 years until the elephant reaches about 45 yrs old. If you mean how many in a lifetime of an elephant...depends on the elephant...elephants have a life span of up to 70 years. If the elephant is in a zoo, life span is about 35 years.
how many muscles in an elephant's ear
False!
70-100 decibels
120
The iPhone can produce a maximum of 100 to 115 decibels.
64 watts = 18.1 decibels. If by 'set' you mean you have two 64 watt speakers then they will create 36.2 decibels.
There is a few generators that will produce less than 60 decibels. That is about the same decibels as background music. These are good to use if you live in an apartment or have very close neighbors.
20 decibels
207 decibels.
The blue whale.
20 to 50 decibels (dB).
85 decibels maximum.
in what
That depends only on the distance where you are hearing the Big Ben and where you are measuring it. Don't come to close.