According to Section 16.10, the smallest detail that can be resolved by medical ultrasound is essentially equal to one wavelength of the sound. (a) If the speed of a 2.20 MHz (1MHz=106 Hz) ultrasonic wave in human tissue is 1540 m/s what is the size in mm of the smallest structure that can be observed (1000 mm=1 m)?(b) How far below the surface of the skin can the sound waves penetrate? Assume their maximum penetration depth is 2.00 x 10^2 wavelengths. (c) How long would it take the sound waves to leave the transmitter, reach their maximum depth, and return to the receiver at the skin's surface?
According to Section 16.10, the smallest detail that can be resolved by medical ultrasound is essentially equal to one wavelength of the sound. (a) If the speed of a 2.20 MHz (1MHz=106 Hz) ultrasonic wave in human tissue is 1540 m/s what is the size in mm of the smallest structure that can be observed (1000 mm=1 m)?(b) How far below the surface of the skin can the sound waves penetrate? Assume their maximum penetration depth is 2.00 x 10^2 wavelengths. (c) How long would it take the sound waves to leave the transmitter, reach their maximum depth, and return to the receiver at the skin's surface?
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter16: Waves
Section: Chapter Questions
Problem 105P: A cable with a linear density of =0.2 kg/m is hung from telephone poles. The tension in the cable is...
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According to Section 16.10, the smallest detail that can be resolved by medical ultrasound is essentially equal to one wavelength of the sound. (a) If the speed of a 2.20 MHz (1MHz=106 Hz) ultrasonic wave in human tissue is 1540 m/s what is the size in mm of the smallest structure that can be observed (1000 mm=1 m)?(b) How far below the surface of the skin can the sound waves penetrate? Assume their maximum penetration depth is 2.00 x 10^2 wavelengths. (c) How long would it take the sound waves to leave the transmitter, reach their maximum depth, and return to the receiver at the skin's surface?
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