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Find the sound intensity level in decibels of $2.00 \times 10^{-2} W/m^{2}$ ultrasound used in medical diagnostics.

$L = 103 \mathrm { dB }$

Physics 101 Mechanics

Chapter 17

Physics of Hearing

Sound and Hearing

Rutgers, The State University of New Jersey

University of Michigan - Ann Arbor

Simon Fraser University

McMaster University

Lectures

08:15

In physics, sound is a vib…

02:16

01:14

What is the sound intensit…

01:15

Calculate the sound level …

01:19

(I) What is the sound leve…

02:22

A person wears a hearing a…

03:13

02:30

The intensity of the sound…

01:06

What sound intensity level…

00:41

(1) What is the sound leve…

01:23

$\bullet$ Find the noise l…

00:59

Refer to the following:

00:56

The loudness level of a so…

01:07

Traffic Noise The intensit…

00:55

03:34

(a) What is the intensity …

01:22

02:14

What is the intensity of a…

01:29

Use the formula in Example…

00:52

00:40

A sound wave from a siren …

All right, so in this question, we want to get this sound intensity level. Um, if we know the intensity. So let's write down the given so that we can calculate the intensity level. So, um, I is 2.0, times 10 to minus two watts per meter. We went beta. So beta is 10 db Log base. 10 of I over I Not that I know is 10 of minus 12 so it's just gonna be 10 db times log of, um 2 10 of the minus. What did they write I to tend Teoh minus two, divided by 10 to the minus 12. And so that's, um I guess I could just walk into a calculator because I can't do, um, the log of two in my head. So 10 times Log of two times 10 to the, um 10. I got 103 db

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