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

$\begin{aligned} f _ { a } & = 121687 \mathrm { Hz } \\ f _ { b } & = 1775 \mathrm { Hx } \end{aligned}$

Physics 101 Mechanics

Chapter 17

Physics of Hearing

Sound and Hearing

Cornell University

University of Michigan - Ann Arbor

University of Sheffield

Lectures

08:15

In physics, sound is a vib…

02:16

03:00

An airplane traveling at h…

04:17

(a) What frequency is rece…

04:48

Two eagles fly directly to…

00:35

The speed of sound in air …

02:25

You are flying in an ultra…

04:57

A fighter jet is traveling…

03:31

A commuter train blows its…

01:56

03:08

A railroad train is travel…

07:00

Two trains are traveling t…

01:37

Twin jet engines on an air…

01:41

What frequency is received…

06:32

(III) A factory whistle em…

02:32

A plane is flying at Mach …

02:24

09:53

02:54

04:32

To permit measurement of h…

00:59

A car is traveling at 20 $…

So in this problem, we haven't checked that moves at the speed off 1200 kilometers and produces a frequency off 3500 hoods. We won't find out what frequency the audience will hear if the speed of the sound is 3 40 meters. President In the first scenario, the jet is moving towards the audience. So in this scenario, the frequency heard is natural frequency times See by C minus suite where we used the speed of the jet and cities to speak with some on deaf not is the only general frequency. So that's 2500 times 3 42 by before you do minus. Nothing to be careful here about is that the speed of sound is in meter per second by the speed off the jet is in killing whatever are so we need to convert it. So that story 100 times to convert kilometer per har into meter per second, we need to multiply by five by 18. If you remember your earlier chapters, that's because a kilometer far hi a kilometer is 1000 meters on dinar is 3600 seconds on 1000 by 6 36 100 times ought to be fired by 80. Is it? This This factor turns out to be about 39.5 on the whole product turns out to be 138 toes in 150. Oh, it's of course, uh, and we should have it only until four significant digits. But we'll just leave it here for today in the part B. If the jet is moving away from the audience in this entire York, the frequency is not C I C plus me because there's a red shift on the frequency, actually, and the person frequency is less than the original frequency. So that's 1335 100 times 3 42 by 3 42 less 100 times five by eight. And this comes up to be 1770 do hurt almost half simplest. That

View More Answers From This Book

Find Another Textbook

Numerade Educator

In physics, sound is a vibration that typically propagates as an audible wav…

01:28

A microphone receiving a pure sound tone feeds an oscilloscope, producing a …

05:02

Atmospheric pressure atop Mt. Everest is $3.30 \times 10^{4} \mathrm{N} / \m…

04:04

A doubly charged ion is accelerated to an energy of 32.0 keV by the electric…

02:34

(a) How strong is the attractive force between a glass rod with a 0.700$\mu …

(a) Calculate the rate of heat conduction through house walls that are 13.0 …

01:39

Suppose you have a device that extracts energy from ocean breakers in direct…

01:53

What are the sign and magnitude of a point charge that produces a potential …

01:38

Suppose a clay model of a koala bear has a mass of 0.200 $\mathrm{kg}$ and s…

09:58

Professional ApplicationTwo manned satellites approaching one another, a…

04:19

Unreasonable Results(a) A certain parallel plate capacitor has plates of…