Solving Sound Intensities | W/m^2 and dB

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To solve the sound intensity problems, one must understand the relationship between sound intensity (W/m^2) and decibels (dB). The intensity level of Sound 2 can be calculated using the formula for decibels, which involves the reference intensity level. For the siren's intensity at 12m, the inverse square law indicates that intensity decreases with the square of the distance from the source. Researching the equations for converting intensity to decibels and the inverse square law is essential for solving these problems. Understanding these concepts will clarify the calculations needed for both scenarios.
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Can anyone help me with how you would solve these? i am lost...

1.) Soudn 1 has an intensity of 380 W/m^2. Sound 2 has an intensity level of 2.5 dB greater than the intensity level of soudn 1. What is the intensity level of sound 2?

2.) A siren produces a soudn of 120 dB at 2m. Find the intensity level of the siren at 12m.
 
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What have you tried to do so far?
 
1) What is the definition of a decibel in regards to sound intensity?

2) What does this question have to do with the inverse square law?
 
Re

Can anyone help ? I am lost
 
You need to do some reading. I gave you two very large hints with the questions I asked you. Look up the equation for calculating decibels from the sound intensity. Also, look up the inverse square law.
 

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