What is the wavelength of the sound waves emitted by two speakers?

manjula
Messages
4
Reaction score
0

Homework Statement



Two loud speakers emit sound waves of the same wavelength.When a microphone is moved between them quiet places are observed 20cm apart.What is the wavelength of the sound waves?

Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
You need to show your attempt at a solution.Are the speakers facing each other?
 
Thread 'Need help understanding this figure on energy levels'

Thread 'Need help understanding this figure on energy levels'

This figure is from "Introduction to Quantum Mechanics" by Griffiths (3rd edition). It is available to download. It is from page 142. I am hoping the usual people on this site will give me a hand understanding what is going on in the figure. After the equation (4.50) it says "It is customary to introduce the principal quantum number, ##n##, which simply orders the allowed energies, starting with 1 for the ground state. (see the figure)" I still don't understand the figure :( Here is...
View full post »
Thread 'Understanding how to "tack on" the time wiggle factor'

Thread 'Understanding how to "tack on" the time wiggle factor'

The last problem I posted on QM made it into advanced homework help, that is why I am putting it here. I am sorry for any hassle imposed on the moderators by myself. Part (a) is quite easy. We get $$\sigma_1 = 2\lambda, \mathbf{v}_1 = \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} \sigma_2 = \lambda, \mathbf{v}_2 = \begin{pmatrix} 1/\sqrt{2} \\ 1/\sqrt{2} \\ 0 \end{pmatrix} \sigma_3 = -\lambda, \mathbf{v}_3 = \begin{pmatrix} 1/\sqrt{2} \\ -1/\sqrt{2} \\ 0 \end{pmatrix} $$ There are two ways...
View full post »

Similar threads

Sound Wave Interference and Finding the Path Differences with Diagrams
Replies
20
Views
5K
What is the Maximum Wavelength for Constructive Interference of Sound Waves?
Replies
3
Views
3K
The Kirchhoff diffraction formula with small wavelength
Replies
1
Views
2K
Diffraction pattern from a grating
Replies
3
Views
784
I Does two-slit sound-wave interference pattern return to original form?
Replies
10
Views
2K
Audio interference of sound waves from two speakers
Replies
19
Views
4K
Observing the Effects of Sound Wave Diffraction: A Demonstration Experiment
Replies
3
Views
1K
Why wave function is probability of particle existence
Replies
7
Views
2K
How Does Speaker Arrangement Affect Sound Intensity at a Point?
Replies
5
Views
5K
Misconceptions about Bragg scattering and how it works
Replies
3
Views
2K

Hot Threads

Recent Insights

Back
Top