Question

5) What part of the ultrasound wave reflects off the bone-muscle boundary? Bone density is 2700 kg/m', muscle tissue density - 1050 kg/m'. a) 25%; b) 35%; c) 45%; d) 55%; e) 65%. ​

Answer 1

Ответ:B-35%

Объяснение:

Just find the reflection coefficient that is by finding intensity ratio