Sadie Broadway
Speed of Sound In Air
We are studying the speed of sound in air currently in our physics class. The speed of sound is the distance traveled by a sound wave through an elastic medium during a period of time. The speed of sound is extremely interesting, as it’s actually the speed of transmission of a small disturbance through a medium. The speed of sound occurs constantly, whenever a sound is heard. It’s everywhere, and in air we are discovering certain factors like altitude and air density. The speeds in ideal gases and air have their own formulas: Thus,
For a gas the K is given by the formula above, and the C is the coefficient of stiffness in solids. Thus the second formula is given. (Gamma) is the adiabatic index, then is the pressure, and the regular P is the density.
In general, the speed of sound is given in the formula:
K is a coefficient of stiffness, the bulk modulus, and P is the density. Then there is a more complex formula for equations of state, if classic mechanics are used, then speed of sound is given in the formula:
The variable is the pressure, and the regular P is the density. Those are just a few other formulas for other substances for the speed of sound. Below I included a chart to help determine and understand the speed of sound on a different level:
The speed of sound is related mostly to the temperature, thus in higher altitudes it’s usually lower because higher altitudes mostly maintain lower temperatures. So in Mammoth I believe that the speed of sound through air would be much slower than places with lower altitudes, especially during the winter. Therefore in our lab I believe that our calculations were technically correct since our altitude is much higher than sea level. Molecules at higher temperatures have more energy and so they vibrate faster. Since the molecules are vibrating faster, then sound travels faster through them. At lower temperatures, for instance at higher altitudes, air...
... Phsyics 1 
Speed of Sound 
Mastery Experiment 

Lindsay Pickelsimer 
12/3/2010 

The speed of sound is a traveled distance through a certain amount of time that uses sound waves that spreads through and elastic medium. It usually depends on the temperature to which how fast it travels; speed of sound is increased when temperature increases. Frequency...
...SPH3UC – Lesson 1
1. A) Amplitude is the distance between the equilibrium and the maximum displacement. In this wave, it would be from the equilibrium to the top of the crest or bottom of the trough.
B)
C)
Speed: m/s
Frequency: Hz
D)
Speed: because speed is constant and not affected by the change in frequency.
Wavelength:0.4 Hz.
2. In transvers waves the motion of the particles is perpendicular to the direction...
...Laboratory I
1. EXPERIMENT : Speed of sound
2. OBJECTIVE: : (1) To determine the wavelength of a sound in resonance air column.
(2) To determine the speed of sound in air at room temperature.
3. APPARATUS : Resonance tube (air column) attached with water container and meter stick,...
...will investigate the properties of mechanical waves such as a longitudinal wave, focusing on the question: Does a change in the frequency of a wave result in a significant and convincing change in the speed of the wave?
Hypothesis: Changing the frequency of the wave will not result in a change in speed because the wavelength will change proportionally as in theory.
Student Designed Investigation
Procedure/ Planning
Procedure:
1. Three students would get...
...PHY 113:
Speed of Sound Resonance Tube
Student’s name: Ilian Valev
Lab partners: Jayanthi Durai, Susan Berrier, Chase Wright
Date of experiment: April 15, 2010
Section SLN: 17742
TA’S name: Alex
Abstract:
This experiment tried to determine the speed of sound waves. To determine the speed, a resonance tube full of water was used and two...
...Title: Measuring the speed of sound.
Research question: How to determine the speed of sound by using the relationship between the
frequency of the signal generator, f and the length of air column in the tube, l .
Variables:
Manipulated  Frequency of the signal generator, f  Use different frequency of signal generator which are 1000Hz, 1400Hz, 1800Hz, 2000Hz, 2500Hz, 3000Hz and 3600Hz....
...Speed of Sound Lab
Physics 0871
Purpose:
To determine the speed of sound of the classroom, by measuring different wavelength produced by resonance of closed tube via frequencies 256Hz, 512Hz, and 1024Hz.
Hypothesis:
Wavelength of sound wave generated by resonance of closed tube is given by multiplying four times the tube length. By knowing the frequency of sound...
...Abstract:
In this lab we want to see how long it takes sound to travel down and back in a tube, determine the speed of that sound, and compare the average of that value to the speed of sound in air. The temperature in the room is 21.8 degrees C, which means that the speed of sound should be 344.5. The value that we obtained for the closed tube was averaged at .00609, which...
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