Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 17: Q5PE (page 629)

Show that the speed of sound in 20.0∘Cair is 343 m/s , as claimed in the text.

Short Answer

Expert verified

The speed is343 m/s

Step by step solution

01

Given Data

The temperature is,

T=20.0∘C=273+20.0K=293K

02

Given Data

the speed of the sound wave increases proportionally with the increase in the temperature of the gas. Thus, the higher the temperature of the gas, higher the velocity of sound in it.

03

Calculation of the speed

The speed of a wave is given by,

vV=T273

For, V = 331 m/s the speed of sound in air at 273 K, we get

v=331m/s293K273K=343m/s

The speed of sound is the same as the speed mentioned in the question.

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 beat frequencies will be present: (a) If the musical notes A and C are played together (frequencies of 220 and 264 Hz)? (b) If D and F are played together (frequencies of 297 and 352 Hz)? (c) If all four are played together?

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

(a) At an air show a jet flies directly toward the stands at a speed of\({\rm{1200}}\;{\rm{km/h}}\), emitting a frequency of\({\rm{3500}}\;{\rm{Hz}}\), on a day when the speed of sound is\({\rm{342}}\;{\rm{m/s}}\). What frequency is received by the observers? (b) What frequency do they receive as the plane flies directly away from them?

In the clinical use of ultrasound, transducers are always coupled to the skin by a thin layer of gel or oil, replacing the air that would otherwise exist between the transducer and the skin. (a) Using the values of acoustic impedance given inTable 17.5calculate the intensity reflection coefficient between transducer material and air. (b) Calculate the intensity reflection coefficient between transducer material and gel (assuming for this problem that its acoustic impedance is identical to that of water). (c) Based on the results of your calculations, explain why the gel is used.

Question: (a) What is the decibel level of a sound that is twice as intense as a \(90.0\;{\rm{dB}}\)sound? (b) What is the decibel level of a sound that is one-fifth as intense as a \(90.0\;{\rm{dB}}\)?
See all solutions

Recommended explanations on Physics Textbooks

Oscillations

Read Explanation

Physical Quantities And Units

Read Explanation

Fluids

Read Explanation

Physics of Motion

Read Explanation

Measurements

Read Explanation

Electricity and Magnetism

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