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

Physics

Wagner

13 January, 15:23

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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Edith Compton · 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