The figure above shows a transmitter and a receiver of sound waves contained in a single instrument. It is used to measure the speed u of a target object (idealized as a flat plate) that is moving directly toward the unit, by analyzing the waves reflected from the target. Show that the frequency f. of the reflected waves at the receiver is related to their source frequency f, by V + u f, = fs V where v is the speed of the waves. In great many practical situations, u << v. In that case, show that the equation above becomes: f,-ts 2u V In medical diagnosis using ultrasound it is said " For every mm per second that a structure in the body moves, the incident ultrasound wave is shifted by approximately 1.30 Hz per MHz". What speed of the ultrasound waves in the tissue do you deduce from thi
The figure above shows a transmitter and a receiver of sound waves contained in a single instrument. It is used to measure the speed u of a target object (idealized as a flat plate) that is moving directly toward the unit, by analyzing the waves reflected from the target. Show that the frequency f. of the reflected waves at the receiver is related to their source frequency f, by V + u f, = fs V where v is the speed of the waves. In great many practical situations, u << v. In that case, show that the equation above becomes: f,-ts 2u V In medical diagnosis using ultrasound it is said " For every mm per second that a structure in the body moves, the incident ultrasound wave is shifted by approximately 1.30 Hz per MHz". What speed of the ultrasound waves in the tissue do you deduce from thi
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter17: Sound Waves
Section: Chapter Questions
Problem 17.61AP: To measure her speed, a skydiver carries a buzzer emitting a steady tone at 1 800 Hz. A friend on...
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