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Physics / Physics: Principles with Applications 6 / Chapter 12 / Problem 56P

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

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A Doppler flow meter uses ultrasound waves to measure

Chapter 13, Problem 56P

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QUESTION:

(II) A Doppler flow meter uses ultrasound waves to measure blood-flow speeds. Suppose the device emits sound at \(3.5 \mathrm{MHz}\), and the speed of sound in human tissue is taken to be \(1540 \mathrm{~m} / \mathrm{s}\). What is the expected beat frequency if blood is flowing in large leg arteries at \(2.0 \mathrm{~cm} / \mathrm{s}\) directly away from the sound source?

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QUESTION:

(II) A Doppler flow meter uses ultrasound waves to measure blood-flow speeds. Suppose the device emits sound at \(3.5 \mathrm{MHz}\), and the speed of sound in human tissue is taken to be \(1540 \mathrm{~m} / \mathrm{s}\). What is the expected beat frequency if blood is flowing in large leg arteries at \(2.0 \mathrm{~cm} / \mathrm{s}\) directly away from the sound source?

ANSWER:

Step 1 of 2

The following are given by the question:

The sound wave frequency,

Speed of the blood,

The speed of the sound in human tissue,

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