Density (kg/m") Medium speed of Ultrasound (m/s) Air 330 1.3 1000 Water 1500 Blood 1060 1570 925 Fat 1450 Muscle (average) 1075 1590 Bone (varies) 1400-1900 4080 Barium titanate (transducer material) 5600 5500 2. (a) Using the values for density and the speed of ultrasound given in the Table, find that the acoustic impedance of fat tissue Z. (b) Calculate the intensity reflection r coefficient of ultrasound when going from fat to muscle tissue.

Density (kg/m") Medium speed of Ultrasound (m/s) Air 330 1.3 1000 Water 1500 Blood 1060 1570 925 Fat 1450 Muscle (average) 1075 1590 Bone (varies) 1400-1900 4080 Barium titanate (transducer material) 5600 5500 2. (a) Using the values for density and the speed of ultrasound given in the Table, find that the acoustic impedance of fat tissue Z. (b) Calculate the intensity reflection r coefficient of ultrasound when going from fat to muscle tissue.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Imagine the time delay between the transmission and the arrival of the reflected wave of an ultrasound signal traveling through a region of someone's fattissue was 0.15 ms. Assume that the speed of sound through human tissues is 1540 m/s. then at what depht in cm the reflection ocurs?
In a resonance tube experiment a tuning fork resonant with in air column 12.5 cm long and again resonates when it is 40 cm long. Calculate the end correction.
In a resonance tube experiment, a tuning fork resonates with an air column 12 cm long and again resonates when it is 38 cm long. Calculated end correction.
Two sound waves identical amplitudes of displacement S_max, but the first wave has a third of the frequency of the second. Calculate the difference in the intensity levels of the waves.
For a 5 MHz ultrasound beam, what is the total attenuation of the echoes received at the transducer from a target 5 cm deep, if the target reflects 50% of the ultrasound energy? Assume an attenuation rate of 1 dB/(cmMHz) a. 48 dB b. 53 dB c. 100 dB d. 200 dB
One end of a wire is connected to the wave generator ond the other end is connected to a 215 g mass poesed through a spool. When the contact point on the reel and the wave generator connected to the other end of the wire is subjected to a frequency of 120 Hz, R creates a standing wave with two nodes on the wire (the wove generator ends on the reel to which the wire is connected and the wave generator ends will not be considered). What masses must be attoched to the end of the wire to create one and four stoble knots on the wire. Compose the answer to the question by drawing and showing one and four knot points on the wire.
The longitudinal oscillations of air layers in sound wave propogation are consistent with the random thermal movement of molecules in air. Explain.
An interface is formed between a block of aluminium (with an acoustic impedance of 1.8 x 107 kg m2 s') and a block of copper (with an acoustic impedance of 4.6 x 107 kg m-2 s-1). Longitudinal sound waves travelling through the aluminium are normally incident on the boundary, and are partially reflected. a) What is the ratio of the amplitude of the reflected wave to that of the incident wave? Number b) What is the ratio of the amplitude of the transmitted wave to that of the incident wave? Number c) What percentage of the incident power is transmitted? Number d) What percentage of the incident power is reflected? Number % Ouit P Sove Questi
a) For a 7.5 MHz ultrasound beam of intensity 23.0 mW cm- 2 traveling in soft tissue, calculate: i. The particle displacement amplitude. i. The particle velocity amplitude. i. The acoustic pressure amplitude. b) For the three different amplitude values you have found above, briefly state how these values compare, and whether this is what you would expect.
Can Please Help Me: Waves and Optics/Physics 60 minutes only the given time. Wish you could help me. I will give UPVOTE and GOOD FEEDBACK. //Question A closed organ pipe has a length of 0.800 m. At 20.0°C, what are the frequencies of (a) the second harmonic and (b) the third harmonic? //Question
Example M 500 High Rings for some time before dying out. A tuning fork with Q = 1000 is struck, producing a sound at 1 m of 60 dB with a frequency of 440 Hz. How loud is the sound after 10 seconds...? Q=1/4 A(t) = Age-t 入

Needs Complete typed solution with 100% accuracy.