Science
​A Graphical Analysis of Sound Waves

Question Description

A Graphical Analysis of Sound Waves

In order to study wave properties of sound, you will analyze a graph between amplitude and its corresponding distance. For this assignment, you will use the Unit I Assignment template located here. (Attached Document) The following video provides the instructions for this assignment:

Unformatted Attachment Preview

A little girl plays on a piano. When she strikes a key, a sound wave travels through her room. She presses four different single keys one by one and the graphical representations of the sound waves are shown below from Plot A to Plot D. You can examine the detailed graphical features by clicking here for a pdf file named “Plot A to D”. After analyzing the individual graphs to obtain physical properties of waves from Plot A to Plot D, complete the Table and answer the following questions. Instructions for this activity are given by the YouTube video (https://www.youtube.com/watch?v=mSsvABvYo70) and the PowerPoint presentation. Complete the Table: Calculate the amplitude, wavelength λ , frequency f , and period T for each plot. When you caculate frequency, use v=fλ, where v is the sound of speed at room temperatue, v = 340 m/s. (50 points) Plot A B C D Amplitude λ[m] f [Hz] T [sec] 1. What is the physical condition to make Plot A equal to Plot B? (6 points) 2. If the wavelength of Plot B is doubled, which plot has the same property? (6 points) 3. When the frequency of the sound doubles, it has a one-octave high pitch. How many more octaves is Plot C compared to Plot D? (6 points) 4. Which two plots have the same period to complete one cycle of oscillation? (6 points) 5. If the pitch of Plot D increased by one octave and the amplitude decreased by half, which plot does Plot D become? (6 points) 6. When you tune the piano, you change the tension (tightness) by tightening or loosening the string in order to get the proper wavelength on the string. If you strengthen the tension of a string, what would you expect the change of the sound to be when you hit the string and why? (5 points) Please describe where you have seen this phenomenon at work in either your personal or professional life. (5 points) Your response must be at least 75 words. No references or citations are necessary. 7. The speed of the sound depends on the pressure, density, and the temperature of the environment. Suppose the speed of the sound increases from 340 m/s to 350 m/s on one hot humid summer day. What would you expect a piano sound to sound like when you hit a key compared to the day of normal clear weather, and why? (5 points)? Please describe the typical weather conditions where you live and how those conditions might affect a piano player in your community. (5 points) Your response must be at least 75 words. No references or citations are necessary. ...
Purchase answer to see full attachment

Final Answer

Please find the attached solution in document and PDF format . Please feel free to ask if you have any questions about the solution :)
check_circle sunil281987 marked this question as complete.


A little girl plays on a piano. When she strikes a key, a sound wave travels through her
room. She presses four different single keys one by one and the graphical representations
of the sound waves are shown below from Plot A to Plot D. You can examine the detailed
graphical features by clicking here for a pdf file named “Plot A to D”. After analyzing the
individual graphs to obtain physical properties of waves from Plot A to Plot D, complete
the Table and answer the following questions.

Instructions
for
this
activity
are
given
by
the
YouTube
video
(https://www.youtube.com/watch?v=mSsvABvYo70) and the PowerPoint presentation.

Complete the Table: Calculate the amplitude, wavelength λ, frequency f, and
period T for each plot. When you calculate frequency, use v=fλ, where v is the
sound of speed at room temperature, v = 340 m/s. (50 points)

Plot
A
B
C
D

Amplitude
1
2
1
2

λ[m]
2
2
1
4

f [Hz]
170
170
340
85

T [sec]
0.00588
0.00588
0.00294
0.01176

1. What is the physical condition to make Plot A equal to Plot B?
(6 points)
If the amplitude of Plot A is doubled then Plot A becomes equal to plot B.
2. If the wavelength of Plot B is doubled, which plot has the same property? (6 points)
From the table, we can see that if the wavelength of plot B is doubled (i.e. 2(2)
=4m) the plot D has the same property as plot B as both have same amplitude and
wavelength in this new condition.
3. When the frequency of the sound doubles, it has a one-octave high pitch. How
many more octaves is Plot C compared to Plot D? (6 points)
The frequency of Plot C is 340 H...

sunil281987 (1033)
UC Berkeley

Anonymous
Thanks for the help.

Anonymous
Outstanding. Studypool always delivers quality work.

Anonymous
Tutor was very helpful and took the time to explain concepts to me. Very responsive, managed to get replies within the hour.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors