This lab 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 into a group.
2.A Slinky would be spread along a table or along the floor and set up as it shows on the diagram above for about 4 meters. 1.For proper data, the length of the floor was measured and marked with a tape. 2.A student would make small waves, while another would time it with a stopwatch until it reaches the other side. This step would be repeated, however the wave would be bigger or smaller, in order to find out if changing the frequency, the speed would change. 3.With the data recoded for many different waves, the velocity would be compared for all of them.
Proposal (diagram) of each Trial:
Trial 1: Trial 2:Trial 3:
Trial 4: Trial 5:
Planning:
According to theory, as frequency changes, the wavelength will change proportionally; therefore, speed will remain the same. By following the procedure that our student design recommends, it will successfully control the variables that should not be changed, such as the slinky, its stretch distance, and the temperature, in order to prove the theory above. The independent variable would be the frequency of the wave, which would change in every trial, while the dependent would be time, which would later be used to find the speed of the traveling wave. In order to collect data,...
...Oklahoma City Community College 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 and wave length deals with determining the speed of sound. Speed of sound is inversely proportional to that of the wave length. In other words, if the velocity increases to a higher speed, then the wave length decreases in size.
A series of different instruments were used in determining the speed of sound in this experiment. This included a frequency meter, a signal generator, a speaker, a microphone, and an oscilloscope. Each had its own purpose in measuring the speed of sound. Specified values were used in this experiment.
Instrument  Manufacturer  Model No.  Range  Least Count 
Oscilloscope  B and K Precision  1472c  015MHz  1Hz 
Frequency meter  Daedalon Co.  N/A  20Hz2MHz  .001 Hz 
Signal generator  EMCO  SS1  20Hz2MHz ...
...Samantha Mackey
13. 2nd hour
PHYSICSLAB REPORT: SPEED OF SOUND
Purpose:
In this lab, we will be doing 3 major things: 1) Collecting and organizing data to obtain resonant points in a closed pipe, 2) measure the length of a closedpipe resonator, and 3) analyze the data to determine the speed of sound.
Procedure:
1. Fill the graduated cylinder nearly to the top with water, with a tall glass tube open at both ends (the water level with act as the closed end).
2. Determine the room’s air temperature, and also measure the diameter of the glass tube. Record the data.
3. Select a tuning fork and record the frequency (in Hz) in the data table. Record the data.
4. Strike the tuning fork against a rubber stopper, and hold it just above the opening of the glass tube. Raise or lower the glass tube/fork until the loudest sound is heard.
5. Once you hear the loudest resonation, hold the tube in place. Measure the distance from the water level, to the top of the glass tube. Record the data.
6. Repeat Steps 35.
Calculations/Analyze (Taken from Trial #1):
1. Accepted Speed of Sound = 331 m/s + 0.6(Temperature)
v = 331 + 0.6(22) = 344.2 m/s
2. Wavelength = 4 x Length of Tube above Water
λ = 4 x (0.32) = 1.28 m
3. Experimental Speed of Sound =...
...Speed of SoundLabPhysics 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 produced by the closed tube, we can determine the speed of sound by the product of frequency and wavelength. We can achieve this by utilizing tuning forks with specific frequency, and measuring the length of tube where resonance occur.
Method:
Refer to Laboratory Manual Physics 0861  0871, page 26
Material:
Refer to Laboratory Manual Physics 0861  0871, page 26
Diagram:
Data Table:
Best Value
Estimate of Error
Diameter of Tube
3.0cm
±0.1cm
Correction Factor
1.2cm
±0.1cm
Frequency (1)
1024Hz
±1Hz
Measured Length (1)
7.8cm
±0.2cm
Corrected Length (1)
9.0cm
±0.3cm
Wavelength (1)
36.0cm, 0.36m
±1.3cm, ±0.01m
Measured Speed (1)
Speed Max: 383m/s
369m/s
±14m/s
Frequency (2)
512Hz
±1Hz
Measured Length (2)
15.5cm
±0.1cm
Corrected Length (2)
16.7cm
±0.2cm
Wavelength (2)
66.8cm, 0.668m
±0.8cm, ±0.008m
Measured...
...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 of the energy. In longitudinal waves it they are parallel to each other.
Wavelength is the distance a wave has travelled after one cycle and does not change. Amplitude is the distance between the equilibrium and the maximum displacement of the wave, and it decreases as a wave travels through a medium.
Period is the time it takes to complete one cycle. Frequency is the number of cycles completed in one second.
3. Before:
After:
Fixed end
4.
Period:
Frequency:
Time to complete 5.0 cycles:
Lesson 2
5.
Speed:
Temp:
6. If the air temperature increases the speed of the sound will increase, because for every increase of 1 the speed of sound increase by 0.59m/s
7. If the temperature of the air increases the wavelength will also increase because the speed of the sound increases. In order to stay at 420Hz, the wavelength must increase....
...ASSUMPTION UNIVERSITY
Faculty of Engineering
Physics 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, thermometer, function generator, speaker.
4. THEORY: : Sound is a longitudinal wave in a medium.
If n is the frequency and is the wavelength of the standing wave, than the speed of the sound at the temperature t c is given by:
vt = (1)
Wavelength (ג)
The speed of sound in air at 0 °C is 331.5 m/s, and as the temperature rises it increases at the rate of about 60 cm/s per degree centigrade. Hence the speed of sound vt at temperature t is obtained from the speed v0 at 0 °C by the relation
vt = v0 + 0.6 t (m/s) (2)
vt = [ 331.5 + 0.6 t ] (m/s)
5. INSTRUCTIONS
1....
...
Centro de investigación y desarrollo de educación bilingüe (CIDEB)
PhysicsLAB REPORT
Uniform Rectilinear Motion
Teacher: Patrick Morris
Alejandra Castillejos Longoria
Group: 205
ID: 1663878
Abstract
The purpose of this experiment, was to prove the concept of the uniform linear motion by using an air track. With this, we demonstrated the impulse and change in momentum, the conservation of energy and the linear motion. We basically learnt to calculate the distance/time, acceleration/time, and velocity/time and graph it. The air track is also used to study collisions, both elastic and inelastic. Since there is very little energy lost through friction it is easy to demonstrate how momentum is conserved before and after a collision. According to the result, the velocity of the object in the air track was constant, it means that it didn’t have acceleration because it has constant velocity.
Introduction
First of all; we should understand what is linear motion. Linear motion is motion along a straight line, and can therefore be described mathematically using only one spatial dimension. Uniform linear motion with constant velocity or zero acceleration. The Air Track can be used to obtain an accurate investigation of the laws of motion. A car or glider travels on a cushion of air provided which reduces...
...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...
...
Testing the Harmonics and the Speed of Sound
WANG ZEJUN (Nina)
Partners: Mavis, Haley
SPH3U – S2
Mrs. Bechtold
April 7th, 2014
Question:
Will the average speed of sound using resonant lengths and the speed of sound using the temperature be the same?
Hypothesis:
Yes, the two different ways of calculating the speed of sound (calculating the speed of sound by using the resonant lengths and the temperature) will have the same result.
Materials:
A retort stand with a clamp
A 512Hz tuning and a 1024Hz tuning fork
A rubber hammer ( to hit the tuning forks)
A resonance tube
A beaker
A rubber tube ( to connect the resonance tube and the beaker)
Water in room temperature
A temperature gauge
Procedure:
1) A thermometer was placed near where the experiment was going to be performed.
2) The beaker, which was connected to the resonance tube through a rubber tube, was hold up at approximately the same height as the top of the resonance tube.
3) Water in room temperature was slowly poured into the beaker until the water surface in the resonance tube was 10cm...
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