What is the intensity in watts per meter square of sound with a sound intensity level of 85.0 dB?...
Question:
What is the intensity in watts per meter square of sound with a sound intensity level of 85.0 dB?
a. {eq}\rm 3.16 \times 10^{-4}\ W/m^2 {/eq}.
b. {eq}\rm 8.50 \times 10^{-4}\ W/m^2 {/eq}.
c. {eq}\rm 1.00 \times 10^{-4}\ W/m^2 {/eq}.
d. {eq}\rm 3.16 \times 10^{20}\ W/m^2 {/eq}.
Intensity of Sound
The intensity of sound wave is defined as the power carried by the sound wave per unit area. The SI unit of intensity of sound is {eq}\text{W/m}^2 {/eq}. It is also expressed in terms of Bels or Decibels. This unit is related with the threshold value of intensity that human ear can hear.
Answer and Explanation: 1
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View this answerGiven:
$$\begin{align} \beta=85.0\ \text{dB} \end{align} $$
The intensity of sound in decibels is given by,
$$\beta=10\log(I/I_0) $$
Where...
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Chapter 5 / Lesson 10This lesson explains what wave intensity in physics is, and it explains the intensity of light formula with examples. This lesson also describes how to calculate intensity of sound waves.