Sound Levels In Decibels

Decibel is

Calculate the sound level (in decibels) of a sound wave that has an intensity of 4.00mu(W)/(m^2) .

The source of a sound wave has a power of 3.00 muW . If it is a point source, (a) what is the intensity 4.20 m away and (b) what is the sound level in decibels at that distance?

A firework charge is detonated many metres above the ground. At a distance of 400 m from the explosion, the acoustic pressure reaches a maximum of 10.0(N)/(m^2) . Assume that the speed of sound is constant at 343 (m)/(s) throughout the atmosphere over the region considered, the ground absorbs all the sound falling on it, and the air absorbs sound energy at the rate of 7.00 (dB)/(km) . What is the sound level (in decibels) at 4.00 km from the axplosion?

For a sound source of intensity IW//m^(2) , corresponding sound level is B_0 decibel If the intensity is increased to 4I , new sound level becomes.

Source waves are emitted uniformly in all directions from a point source. The dependence of sound level beta in decibels on the distance r can be expressed as (a and b are positive constants)

A sound has an intensity of 2 xx 10^(-8) W//m^(2) . Its intensity level in decibels is (log_(10) 2 = 0.3)

Find the intensity level of a sound wave in decibles of a sound wave whose intensity is 10^(-10) cm^(-2) . Take zero level of intensity = 10^(-12)Wm^(-2) .

Assertion : Sound level increases linearly with intensity of sound. Reason : If intensity of sound is doubled, sound level increases approximatel 3 dB .