A Doppler ultrasound device can be used to monitor a fetal heartbeat, by tracking the motion of the heart wall. Assume the wall moves in simple harmonic motion with an amplitude of 1.89 mm and a frequency o 130 beats per minute. (a) Find the maximum linear speed of the heart wall (in m/s). m/s Suppose a source mounted on the detector in contact with the mother's abdomen produces sound at 2,000,000.0 Hz, which travels through tissue at 1.50 km/s. (b) Find the maximum change in frequency between the sound that arrives at the wall of the baby's heart and the sound emitted by the source. (Enter the magnitude in Hz.) Hz (c) Find the maximum change in frequency between the reflected sound received by the detector and that emitted by the source. (Enter the magnitude in Hz.) Hz

Principles of Physics: A Calculus-Based Text
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Author:Raymond A. Serway, John W. Jewett
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Chapter13: Mechanical Waves
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A Doppler ultrasound device can be used to monitor a fetal heartbeat, by tracking the motion of the heart wall. Assume the wall moves in simple harmonic motion with an amplitude of 1.89 mm and a frequency of
130 beats per minute.
(a) Find the maximum linear speed of the heart wall (in m/s).
m/s
Suppose a source mounted on the detector in contact with the mother's abdomen produces sound at 2,000,000.0 Hz, which travels through tissue at 1.50 km/s.
(b) Find the maximum change in frequency between the sound that arrives at the wall of the baby's heart and the sound emitted by the source. (Enter the magnitude in Hz.)
Hz
(c) Find the maximum change in frequency between the reflected sound received by the detector and that emitted by the source. (Enter the magnitude in Hz.)
Hz
Transcribed Image Text:A Doppler ultrasound device can be used to monitor a fetal heartbeat, by tracking the motion of the heart wall. Assume the wall moves in simple harmonic motion with an amplitude of 1.89 mm and a frequency of 130 beats per minute. (a) Find the maximum linear speed of the heart wall (in m/s). m/s Suppose a source mounted on the detector in contact with the mother's abdomen produces sound at 2,000,000.0 Hz, which travels through tissue at 1.50 km/s. (b) Find the maximum change in frequency between the sound that arrives at the wall of the baby's heart and the sound emitted by the source. (Enter the magnitude in Hz.) Hz (c) Find the maximum change in frequency between the reflected sound received by the detector and that emitted by the source. (Enter the magnitude in Hz.) Hz
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