Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

(a) Find the intensity in watts per meter squared of a 60.0-Hz sound having a loudness of 60 phones. (b) Find the intensity in watts per meter squared of a 10,000-Hz sound having a loudness of 60 phones.

a) $2\times 10^{-5}$ b) $2 \times 10^{-6}$

Physics 101 Mechanics

Chapter 17

Physics of Hearing

Sound and Hearing

Rutgers, The State University of New Jersey

Hope College

McMaster University

Lectures

04:16

In mathematics, a proof is…

04:48

In mathematics, algebra is…

04:52

(a) What is the intensity …

02:27

What is the approximate so…

05:18

(a) What are the loudness …

00:50

For a person with normal h…

01:08

People with good hearing c…

01:20

02:29

What sound intensity level…

03:34

02:58

$\cdot$ Find the intensity…

02:34

What is the intensity in w…

02:14

What is the intensity of a…

06:18

A sound wave in air at $20…

03:15

An outside loudspeaker (co…

03:42

(a) If two sounds differ b…

01:23

$\bullet$ Find the noise l…

01:26

The relationship between t…

01:09

A sound wave in air at 20$…

04:07

The intensity of a sound w…

01:15

Calculate the sound level …

02:08

Use the following discussi…

So in this problem, we want to find the intensity for two these two different cells. Andi, I wrote down the givens. Um, already, I started this video, and, um, there was a huge pause because I really had trouble reading the graph. Just like my eyes. It was playing tricks on me. Um, and so I posit video. All right, I'm reviewing the video. So the for the first sound I'm seeing around 73 db from the graph 17.38 um, in the book. So I would say that's around 73 db And then for the 10,001 that 60 phones. But I want a lot easier. Um, I would say that's Mike, 62 d v. And I think we want to get these and wants per meter squared. So let's first come up with a formula for the intensity and watts per meter squared. So we know beta is equal. These air are betas, by the way, Um, and then we know beta is equal to 10 D b times. The log of, um, I over I not And then we can use, um, algebra to solve for I. So you want to take Beta invited by 10 and then, um, take both sides to the 10th power. I brought this to get I over. I not. And so I z then this thing, he tended the bottom over 10 times. I not great. And so now we can plug in for different betas. Oh, and I not is 10 to the minus 12. So we have come. So for the 1st 1 kind of minus 12 times tend to the 7.3 good size. Um, very small number one. So basically two times 10 to the minus five watts per meter squared and the other one is 62. So I'm just gonna do the same calculation, but plug in 62 into my equation. Um, and so that gives me life One point. Let's just due to one sig figs, that would be too. And so two times 10 to the minus six

View More Answers From This Book

Find Another Textbook

Numerade Educator

In mathematics, a proof is a sequence of statements given to explain how a c…

In mathematics, algebra is one of the broad parts of mathematics, together w…

(a) What is the intensity in watts per meter squared of a just barely audibl…

What is the approximate sound intensity level in decibels of a 600-Hz tone i…

(a) What are the loudness in phones of sounds having frequencies of 200, 100…

For a person with normal hearing, the faintest sound that can be heard at a …

People with good hearing can perceive sounds as low as $-8.00 \mathrm{dB}$ a…

People with good hearing can perceive sounds as low in level as –8.00 dB at …

What sound intensity levels must sounds of frequencies 60, 3000, and 8000 Hz…

(a) What is the intensity of a sound that has a level 7.00 dB lower than a $…

$\cdot$ Find the intensity $\left($ in $W / m^{2}\right)$ of (a) a 55.0 dB s…

What is the intensity in watts per meter squared of 85.0-dB sound?

What is the intensity of a sound that has a level 7.00 dB lower than a $4.00…

A sound wave in air at $20^{\circ} \mathrm{C}$ has a frequency of 150 $\math…

An outside loudspeaker (considered a small source) emits sound waves with a …

(a) If two sounds differ by 5.00 dB, find the ratio of the intensity of the …

$\bullet$ Find the noise level (in dB) of a sound having an intensity of (a)…

The relationship between the number of decibels $d B$ (one variable) and the…

A sound wave in air at 20$^\circ$C has a frequency of 320 Hz and a displacem…

The intensity of a sound wave at a fixed distance from a speaker vibrating a…

Calculate the sound level (in decibels) of a sound wave that has an intensit…

Use the following discussion: The loudness $L(x),$ measured in decibels $(d …

11:07

A multipurpose transformer has a secondary coil with several points at which…

01:40

Find the sound intensity level in decibels of $2.00 \times 10^{-2} W/m^{2}$ …

01:03

A North American tourist takes his 25.0-W, 120-V AC razor to Europe, finds a…

Integrated Concepts(a) What is the cost of heating a hot tub containing …

02:39

At what net rate does heat radiate from a $275-{m}^{2}$ black roof on a nigh…

02:45

Verify that the units of $\Delta \Phi / \Delta t$ are volts. That is, show t…

05:04

64. Integrated Concepts(a) Assuming 95.0$\%$ efficiency for the conversi…

01:21

An electric water heater consumes 5.00 kW for 2.00 h per day. What is the co…

03:40

Apply the loop rule to loop abcdefghija in Figure 21.55.