The intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²
Decibel level, dB = 10log₁₀(I/I₀) where dB = decibel level = 156, I = intensity at 156 dB and I₀ = 10⁻¹² W/m².
Since we require I, making I subject of the formula, we have
dB/10 = log₁₀(I/I₀)
![\frac{I}{I_{0} } = 10^{\frac{dB}{10} } \\I = I_{0} 10^{\frac{dB}{10} }](https://tex.z-dn.net/?f=%5Cfrac%7BI%7D%7BI_%7B0%7D%20%7D%20%3D%2010%5E%7B%5Cfrac%7BdB%7D%7B10%7D%20%7D%20%5C%5CI%20%3D%20I_%7B0%7D%2010%5E%7B%5Cfrac%7BdB%7D%7B10%7D%20%7D)
Substituting the values of the variables into the equation, we have
![I = I_{0} 10^{\frac{dB}{10} }\\I = 10^{-12} 10^{\frac{156}{10} }\\I = 10^{-12} 10^{15.6}\\I = 10^{15.6-12} \\I = 10^{3.6} W/m^{2}](https://tex.z-dn.net/?f=I%20%3D%20I_%7B0%7D%2010%5E%7B%5Cfrac%7BdB%7D%7B10%7D%20%7D%5C%5CI%20%3D%2010%5E%7B-12%7D%2010%5E%7B%5Cfrac%7B156%7D%7B10%7D%20%7D%5C%5CI%20%3D%2010%5E%7B-12%7D%2010%5E%7B15.6%7D%5C%5CI%20%3D%2010%5E%7B15.6-12%7D%20%5C%5CI%20%3D%2010%5E%7B3.6%7D%20W%2Fm%5E%7B2%7D)
I = 3981.072W/m²
I = 3.981 × 10³ W/m²
So, the intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²
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brainly.com/question/4431819
First, its not 3+1/10 its 3/10+1/10, second its a negative 1/10 not positive, so 3/10+-1/10. Thats the same thing as 3/10-1/10, so the answer is 2/10
Answer:
Step-by-step explanation:
From the figure attached,
In the given right triangles ΔADB and ΔCDB,
Statements Reasons
1). ∠BAD ≅ ∠BCD 1). Given
2). BD ≅ BD 2). Reflexive property
3). ΔADB ≅ ΔCDB 3). By LA theorem of congruence of right triangles
Therefore, there is sufficient information to prove the ΔADB and ΔCDB congruent.
Leg-angle theorem (L-A) will be used to prove the right triangles congruent.
Answer:
x=a+ b x=a-b
Step-by-step explanation:
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