Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 17: Q15PE (page 629)

What intensity level does the sound in the preceding problem correspond to?

Short Answer

Expert verified

The intensity level is \(84.5\;{\rm{dB}}\).

Step by step solution

01

Given Data

The intensity is \(I = 2.83 \times {10^{ - 4}}\;{\rm{W/}}{{\rm{m}}^{\rm{2}}}\).

02

Sound intensity level

The intensity level is the logarithm of the sound intensity ratio to the threshold intensity—the unit of intensity level in dB.

03

Calculation of the intensity level

Use the intensity level of the sound as,

\({\rm{dB}} = 10\log \frac{I}{{{{10}^{ - 12}}}}\)

Substituting the values we get,

\(\begin{align}{\rm{dB}} &= 10\log \frac{{2.83 \times {{10}^{ - 4}}}}{{{{10}^{ - 12}}}}\\ &= 84.5\;{\rm{dB}}\end{align}\)

Therefore the levels of intensity is \(84.5\;{\rm{dB}}\)

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

What length should an oboe have to produce a fundamental frequency of 110 Hz on a day when the speed of sound is 343 m/s? It is open at both ends.

(a) Students in a physics lab are asked to find the length of an air column in a tube closed at one end that has a fundamental frequency of 256 Hz. They hold the tube vertically and fill it with water to the top, then lower the water while a 256 Hz tuning fork is rung and listen for the first resonance. What is the air temperature if the resonance occurs for a length of 0.336 m?

(b) At what length will they observe the second resonance (first overtone)?

What is the difference between an overtone and a harmonic? Are all harmonics overtones? Are all overtones harmonics?

A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be\(0.400\;{\rm{s}}\). (a) How far away is the explosion if air temperature is\(24\;{\rm{^\circ C}}\)and if you neglect the time taken for light to reach the physicist? (b) Calculate the distance to the explosion taking the speed of light into account. Note that this distance is negligibly greater.

Due to efficiency considerations related to its bow wake, the supersonic transport aircraft must maintain a cruising speed that is a constant ratio to the speed of sound (a constant Mach number). If the aircraft flies from warm air into colder air, should it increase or decrease its speed? Explain your answer.
See all solutions

Recommended explanations on Physics Textbooks

Physics of Motion

Read Explanation

Force

Read Explanation

Space Physics

Read Explanation

Waves Physics

Read Explanation

Electric Charge Field and Potential

Read Explanation

Circular Motion and Gravitation

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free