SPI Exam Dumps | Which parameters determine the propagation speed of sound in a medium?

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Question 34/99

Which parameters determine the propagation speed of sound in a medium?

A. Frequency and impedance

B. Amplitude and impedance

C. Intensity and density

D. Elasticity and density

Correct Answer: D

The propagation speed of sound in a medium is determined by the medium's elasticity and density. Elasticity refers to the ability of the medium to return to its original shape after deformation, while density is the mass per unit volume of the medium. The speed of sound increases with higher elasticity and decreases with higher density. This relationship is described by the equation#=##v=#E, where#vis the propagation speed,#Eis the elasticity (or modulus of elasticity), and##is the density.
References
* ARDMS Sonography Principles and Instrumentation (SPI) Exam Study Guide
* "Diagnostic Ultrasound: Principles and Instruments" by Frederick W. Kremkau

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