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love history [14]
2 years ago
5

A bugle can be thought of as an open pipe. If a bugle were straightened out, it would be 2.65 mlong.a.) If the speed of sound is

343m/????, find the lowest frequency that is resonant for a bugle (ignoring end corrections)b.) Find the next two resonant frequencies for the bugle.
Physics
1 answer:
Nezavi [6.7K]2 years ago
3 0

Answer:

(a). The lowest frequency is 64.7 Hz.

(b). The next two resonant frequencies for the bugle are 129.4 Hz and 194.2 hz.

Explanation:

Given that,

Length = 2.65 m

Speed of sound = 343 m

We need to calculate the wavelength

Using formula of wavelength

\lambda=2l

Put the value into the formula

\lambda=2\times2.65

\lambda=5.3\ m

(a). We need to calculate the lowest frequency

Using formula of frequency

f_{1}=\dfrac{v}{\lambda_{1}}

Put the value into the formula

f_{1}=\dfrac{343}{5.3}

f_{1}=64.7\ Hz

(b). We need to calculate the next two resonant frequencies for the bugle

Using formula of resonant frequency

f_{2}=\dfrac{v}{\lambda_{2}}

f_{2}=\dfrac{v}{l}

Put the value into the formula

f_{2}=\dfrac{343}{2.65}

f_{2}=129.4\ Hz

For third frequency,

f_{3}=\dfrac{v}{\lambda_{3}}

f_{3}=\dfrac{3v}{2l}

Put the value into the formula

f_{3}=\dfrac{3\times343}{2\times2.65}

f_{3}=194.2\ Hz

Hence, (a). The lowest frequency is 64.7 Hz.

(b). The next two resonant frequencies for the bugle are 129.4 Hz and 194.2 hz.

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