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Sagot :
Answer:
[tex]f=1.297Hz[/tex]
Explanation:
From the question we are told that:
Initial pipe length [tex]L_1=1.03m[/tex]
Final pipe length [tex]L_2=1.03+(1.50*10^-2)[/tex]
[tex]L_2=1.045m[/tex]
Generally the equation for Frequency f is mathematically given by
[tex]F=\frac{v}{\lambda}[/tex]
Where
[tex]\lambda=4L[/tex]
And
V=speed of sound in air
[tex]v=343m/s[/tex]
Therefore
[tex]f=\frac{v}{4}{\frac{1}{L_1}-\frac{1}{L_2}}[/tex]
[tex]f=\frac{343}{4}{\frac{1}{1.03}-\frac{1}{1.045}}[/tex]
[tex]f=1.297Hz[/tex]
The beat frequency they produce when playing together in their fundamental is 1.2 Hz.
The given parameters;
- initial pipe length, Lā = 1.03 m
- final pipe length, Lā = 1.03 m + 1.5 cm = 1.03 m + 0.015 m = 1.045 m
The frequency of wave is calculated as follows;
[tex]v = f \lambda \\\\f = \frac{v}{\lambda }[/tex]
The fundamental frequency of closed pipe is calculated as follows;
[tex]L= \frac{\lambda}{4} \\\\\lambda = 4L\\\\f = \frac{v}{4L}[/tex]
The beat frequency is calculated as follows;
[tex]f_0 - f_1 = \frac{v}{4L_0} - \frac{v}{4L_1} \\\\f_0 - f_1 = \frac{v}{4} (\frac{1}{L_0} - \frac{1}{L_1} )\\\\f_0 - f_1 = \frac{343}{4} (\frac{1}{1.03} - \frac{1}{1.045} )\\\\f_0 - f_1 = 1.2 \ Hz[/tex]
Thus, the beat frequency they produce when playing together in their fundamental is 1.2 Hz.
Learn more here:https://brainly.com/question/23432691
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