Question

Please answer all sub-parts to this one question

Part A - Audible wavelengths. The range of audible frequencies is from about 20.0Hz to 2.00x 10^4Hz . What s range of the wavelengths of audible sound in air? Part 5 - Visible light. The range of visible light extends from 400nm to 700nm . What is the range of visible frequencies of light? Part C - Brain surgery. Surgeons can remove brain tumors by using a cavitron ultrasonic surgical aspirator, which produces sound waves of frequency 28.5kHz . What is the wavelength of these waves in air? Part D - Sound In the body. What would be the wavelength of the sound ?in part C in bodily fluids in Which the speed of sound Is 1480m/s , but the frequency is unchanged?

Answer 1

$\lambda=\frac{v}{f}$

speed of sound = 343.59 metres per second

$\lambda_{min}=\frac{ 343.59 m/s}{2*10^4Hz}=17.179*10^{-3}m$

$\lambda_{max}=\frac{ 343.59 m/s}{20Hz}=17.179m$

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$f=\frac{v}{\lambda}$

$f_{min}\frac{3*10^8m/s}{700*10^{-9}m}=4.285*10^{14}hz$

$f_{max}\frac{3*10^8m/s}{400*10^{-9}m}=7.5*10^{14}hz$

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$\lambda_s=\frac{ 343.59m/s}{28.5*10^{3}Hz}=1.2125 cm$

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$\lambda_s=\frac{ 1480m/s}{28.5*10^{3}Hz}=5.21 cm$