Answered: For a 5 MHz ultrasound beam, what is… | bartleby

Related questions

Question

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

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

Dogs can here sound waves with frequencies ranging from 40 Hz to 60 kHz. What are the wavelengths of these frequencies in air (Vs = 340 m/s)?
An intensity detector can be moved along a straight track. a source of spherical waves is placed at one end of the track. When the detector is 2 m away from the source, it measures an intensity of 80 W/m2. What distance do we need to move the detector from that position to get a measurement 13 dB lower? Answer: 6.95m
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
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

Problem #3: What intensity level dB in does a sound of 3. 04 × 10–4 W/m2 correspond to?
The sound pressure level at 250 Hz is 50 dB in one room and in 30 dB in the other. The surface area of the wall between them is 15 m2. The total amount of absorption at 250 Hz in the room with the lower noise level is 20 Sabines. What is the sound reduction index of the separating partition at 250 Hz:a. 20.0 dBb. 17.5 dBc. 18.8 dBd. 44.8 dB
Suppose the purr of a cat has a sound intensity that is 370 times greater than the threshold level. Find the decible value for this cat’s purr. Round to the nearest decible. ? dB
Part B A52-dB sound wave strikes an eardrum whose area is 5.0 x 10m The intensity of the reference level required to determine the sound level is 1.0 x 10-1 W/m 1 yr 3.156 x 107s At this rate, how long would it take the eardrum to receive a total energy of 1.0 J? Express your answer using two significant figures. ΑΣΦ t 3D yr Submit Request Answer Previous の hp hp f5 f6 f7 f8
I have tried 16.7x10^3, 16.7x10^4, and 1.365x10^8 and those are all wrong for the first part. I know that the second part is 14.3 hr. I need to know the km/s. Thank you!!