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Examen
UniSA Module 1 2023 with complete solution question and answers
A 10dB difference in signal intensity is equivalent to a ... 
Tenfold 
 
 
 
The reflection coefficient between water and air is ... 
Nearly 100% 
The reflection coefficient between water and air interface is nearly 100%. Air prevents the sound from entering the body. It is for this reason that a coupling gel is necessary. 
 
 
 
 
How much will a 3.5MHz pulse be attenuated after passing through 2cm of soft tissue? 
3.5dB. 
A rule of thumb approximating the attenuation coefficient of a reflected...