Respuesta :
The speed of the sounding body will be 347.36 m/sec.
What is the frequency of the sound?
A sound pressure wave's frequency, also known as pitch, is the number of times it repeats itself every second.
The given data in the problem is;
v₂ is the speed of the sounding body
f₂ is the frequency of the sounding body
λ is the wavelength of the wave
The relationship between the wave's wavelength, frequency, and speed is given as
wavelength = speed of wave / frequency
The wavelength of the wave is constant;
[tex]\rm \lambda= \frac{v}{f} \\\\ \frac{v_1}{f_1} = \frac{v_2}{f_2} \\\\ \frac{330 \ m/sec }{380 \ Hz} = \frac{ v_2}{400 \ Hz} \\\\ v_2 = 347.36 \ m/sec[/tex]
Hence, the speed of the sounding body will be 347.36 m/sec.
To learn more about the frequency of the sound refer to the link;
https://brainly.com/question/1435829
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