A source of ultrasound emits waves at a frequency of 2.00×106 Hz . The waves are reflected by red blood cells moving toward the source at a speed of 0.30 m/s

Determine the difference between the frequency of sound detected at a receiver next to the source and the source sound frequency fs . The speed of sound in the blood is 1500.00 m/s .

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26-02-2022
Physics

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A source of ultrasound emits waves at a frequency of 2.00×106 Hz . The waves are reflected by red blood cells moving toward the source at a speed of 0.30 m/s

Determine the difference between the frequency of sound detected at a receiver next to the source and the source sound frequency fs . The speed of sound in the blood is 1500.00 m/s .

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onyebuchinnaji onyebuchinnaji · Answer 1 · 2022-03-04T10:24:24+01:00

The difference between the source frequency and the observed frequency is 400 Hz.

Doppler effect

The observed frequency or frequency of sound detected is calculated by applying Doppler effect formula;

[tex]f_s = f_0(\frac{v}{v - v_s} )\\\\2\times 10^6 = f_0 (\frac{1500}{1500 - 0.3} )\\\\2\times 10^6 = 1.0002 f_o\\\\f_o = \frac{2\times 10^{6}}{1.0002} \\\\f_o = 1.9996 \times 10^6 \ Hz[/tex]

Difference between the source frequency and the observed frequency

[tex]f_s - f_o = 2\times 10^6 \ Hz \ - \ 1.9996 \times 10^6 \ Hz = 400 \ Hz[/tex]

Learn more about Doppler effect here: https://brainly.com/question/3841958