Experiment 5 Introduction to sound
Experiment
we will be investigating the properties of sound propagation through air. We will
be observing that this propagation of sound through air is still being
controlled by the equation in this experiment we will be measuring sounds emitted
by a person and we will analyze the propagation of speed trough air
answers to questions a-h
b) in this graph we can see that there is a total of 3.5 waves during the interval of .03 sec
c) the probe collected data such as
d) The probe collected data such as the blink of an eye.
e) The frequency of this wave is 125 hz. Here is a picture of the graph and the procedure in obtaining the frequency
f) The wave length of the sound wave is 2.72 meters in air at room temperature relating this is about the size of a white board measured longwise
g) the amplitude is calculated by measuring the peak of the wave and the bottom of the other wave and divided by 2. A=1.3
f)
If we make the sample 10 times as long
the answer will not change because we will obtain the same frequency, the same
period. The only difference would be that we would be seeing more waves.
2) here is the second graph with its propper frequency, period, amplitudea, and wave lenght.
3) the graph of the sound of a tuning fork is more smooth. is more similiar to a sine function.
4) Using the same fork but with sound that
is less loud than the first one. this changes in the amplitude of the graph. But
the wavelength the frequency stay the same
Analysis of this lab, we can observe
that human voice is a wave that has a pattern but it is not smooth. The pattern
of this wave has a very complex pattern. Even though this wave may seem
complex, it is still easy to calculate the period and therefore calculate frequency
and the wave length. On the other hand we can observe that the graphs of a
tuning fork are are smoother than those of the human voice. We can also observe
that the amplitude of the wave decreases when the sound is less loud.
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