If one firecracker produces a sound intensity of 90db, what would be the intensity of a sound produced by 1000 firecrackers, all going off at once?

90db

Explanation:

The 1000, will produce sa.e intensity, since the firecrackers are made of same materials

additional intensity of 30db result in 120db

Explanation:

Sound intensity is defined as the sound power per unit area in other words, it is the power carried by sound waves per unit area in a direction perpendicular to that area. The common approach to sound intensity measurement is to use the decibel scale to measure the ratio of a given intensity I to the threshold of hearing intensity.

Since log 1000=3

Therefore, 10 log 1000=30 db assuming that the distance is the same in both cases.

result in 120db i.e 90+30 = 120db. Which is painful at that point.

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

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