Ultrasound. High-frequency sound waves (ultrasound) are used to probe the interior of the body, much as x rays do. To detect a small objects such as tumors, a frequency of around 5.10 MHz is used. What are the period and angular frequency of the molecular vibrations caused by this pulse of sound

Question

Gisselle Garrison

Physics

20 December, 06:43

Ultrasound. High-frequency sound waves (ultrasound) are used to probe the interior of the body, much as x rays do. To detect a small objects such as tumors, a frequency of around 5.10 MHz is used. What are the period and angular frequency of the molecular vibrations caused by this pulse of sound

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Eduardo Livingston · Answer 1

Frequency of sound n = 5.1 MHz = 5.1 x 10⁶ Hz

angular frequency ω = 2π x n

= 2 x 3.14 x 5.1 x 10⁶ rad / s

= 32.028 x 10⁶ rad / s

period of vibration = 1 / n

1 / 5.1 x 10⁶

=.196 x 10⁻⁶ s

T =.196 μs