Calculate the reflected percentage of an ultrasound wave passing from human muscle into bone. Muscle has...
Calculate the reflected percentage of an ultrasound wave passing from human muscle into bone. Muscle has a typical density of 1.06 x 103 kg/m3 and bone has a typical density of 1.80 x 103 kg/m3 (Give answer in %)
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Calculate the reflected percentage of an ultrasound wave passing
from human muscle into bone. Muscle has...
Calculate the relative sound intensity of a wave after passing through 5 cm of muscle and...
Calculate the relative sound intensity of a wave after passing through 5 cm of muscle and 2 cm of bone, as a percent of the initial intensity. (note attenuation coefficient is 1-3.3 for muscle and 15 for bone) it doesnt say but i think we are supposed to use beers law I=Ioe-ax a is attenuation coefficient and x is distance. problem im having is the value i am getting is super small and incorrect
6) If a plane wave is reflected from the ocean floor with a 15 dB reduction in amplitude angle of incidence of 30°, what are the possible values of the specific fluid bottom material if it has a...
6) If a plane wave is reflected from the ocean floor with a 15 dB reduction in amplitude angle of incidence of 30°, what are the possible values of the specific fluid bottom material if it has a speed of sound of 1666m/s? at an acoustic impedance of the 7) Calculate the amplitude and phase of the reflection coefficient for a plane wave incident on a sediment with density 1200 kg/m', sound speed 1700 m/s at an angle of incidence...
The average human has a density of 945 kg/m^3 after inhaling and 1020 kg/m^3 after exhaling,...
The average human has a density of 945 kg/m^3 after inhaling and 1020 kg/m^3 after exhaling, out making any swimming movements, what percentage of the human body would be above the surface in the Dead Sea (a body of water with a density of about 1230 kg/m^3) In each of these cases? (b) Given that bone and muscle are denser than fat, what physical characteristics differentiate -sinkers" (those who tend to sink in water) from "floaters" (those who readily float)?...
1. An experimenter wishes to generate in air a sound wave that has a displacement amplitude...
1. An experimenter wishes to generate in air a sound wave that has a displacement amplitude of 5.70 x 10-6 m. The pressure amplitude is to be limited to 0.850 Pa. What is the minimum wavelength the sound wave can have? (Take the equilibrium density of air to be p = 1.20 kg/m3 and assume the speed of sound in air is v = 343 m/s.) m 2. A sound wave in air has a pressure amplitude equal to 3.98...
Please answer all of these questions with brief explanations. Thank you! Name: Doppler ultrasound PROBLEM 4-8...
Please answer all of these questions with brief explanations.
Thank you!
Name: Doppler ultrasound PROBLEM 4-8 points Ultrasound is the name we give to sound waves that have a higher frequency than 20 kHz, which is the maximum frequency our ears can respond to. For this problem, assume that high frequency sound waves travel through human tissue at 1500 m/s (about the speed of sound in water). 2 points] (a) Ultrasound equipment for diagnostic imaging typically uses frequencies between 1...
A sound wave in air has a pressure amplitude equal to 4.04 ✕ 10-3 Pa. Calculate...
A sound wave in air has a pressure amplitude equal to 4.04 ✕ 10-3 Pa. Calculate the displacement amplitude of the wave at a frequency of 9.4 kHz. (Note: Use the following values, as needed. The equilibrium density of air is ρ = 1.20 kg/m3; the speed of sound in air is v = 343 m/s. Pressure variations ΔP are measured relative to atmospheric pressure, 1.013 105 Pa.)
5 Number of electrons Copper consists of atoms that each have 29 electrons and mass 1.06...
5 Number of electrons Copper consists of atoms that each have 29 electrons and mass 1.06 x 10-25 kg. Copper has a density of 8.69 kg/m3 mo. Assume that the copper is electrically neutral. b) Suppose that electrons are removed from the copper so that it has a net charge of 5.0 x 10-9 C (this is a typical number for capacitors in electronic circuits). Determine the number of electrons that have been removed. c) What fraction of the total...
The authors of the paper "Weight-Bearing Activity during Youth Is a More Important Factor for Peak...
The authors of the paper "Weight-Bearing Activity during Youth Is a More Important Factor for Peak Bone Mass than Calcium Intake" studied a number of variables they thought might be related to bone mineral density (BMD). The accompanying data on x = weight at age 13 and y = bone mineral density at age 27 are consistent with summary quantities for women given in the paper. Weight (kg) BMD (g/cm2) 54.4 1.15 59.3 1.26 74.6 1.42 62.0 1.06 73.7 1.44...
The radius of a solid sphere is measured to be (6.00 ± 0.26) cm, and its...
The radius of a solid sphere is measured to be (6.00 ± 0.26) cm, and its mass is measured to be (1.80 ± 0.05) kg. Determine the density of the sphere in kilograms per cubic meter and the uncertainty in the density. (Use the correct number of significant figures. Use the following formula to calculate the uncertainty in the density:-=-+ -) Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully....
Calculate the speed (in m/s) a spherical rain drop would achieve falling from 4.70 km in...
Calculate the speed (in m/s) a spherical rain drop would achieve falling from 4.70 km in the absence of air drag and with air drag. Take the size across of the drop to be 9 mm, the density to be 1.00 ✕ 103 kg/m3, and the surface area to be πr2. (Assume the density of air is 1.21 kg/m3.) (a) in the absence of air drag 303.51 Correct: Your answer is correct. m/s (b) with air drag
6) If a plane wave is reflected from the ocean floor with a 15 dB reduction in amplitude angle of incidence of 30°, what are the possible values of the specific fluid bottom material if it has a speed of sound of 1666m/s? at an acoustic impedance of the 7) Calculate the amplitude and phase of the reflection coefficient for a plane wave incident on a sediment with density 1200 kg/m', sound speed 1700 m/s at an angle of incidence...
The average human has a density of 945 kg/m^3 after inhaling and 1020 kg/m^3 after exhaling, out making any swimming movements, what percentage of the human body would be above the surface in the Dead Sea (a body of water with a density of about 1230 kg/m^3) In each of these cases? (b) Given that bone and muscle are denser than fat, what physical characteristics differentiate -sinkers" (those who tend to sink in water) from "floaters" (those who readily float)?...
1. An experimenter wishes to generate in air a sound wave that has a displacement amplitude of 5.70 x 10-6 m. The pressure amplitude is to be limited to 0.850 Pa. What is the minimum wavelength the sound wave can have? (Take the equilibrium density of air to be p = 1.20 kg/m3 and assume the speed of sound in air is v = 343 m/s.) m 2. A sound wave in air has a pressure amplitude equal to 3.98...
Please answer all of these questions with brief explanations.
Thank you!
Name: Doppler ultrasound PROBLEM 4-8 points Ultrasound is the name we give to sound waves that have a higher frequency than 20 kHz, which is the maximum frequency our ears can respond to. For this problem, assume that high frequency sound waves travel through human tissue at 1500 m/s (about the speed of sound in water). 2 points] (a) Ultrasound equipment for diagnostic imaging typically uses frequencies between 1...
5 Number of electrons Copper consists of atoms that each have 29 electrons and mass 1.06 x 10-25 kg. Copper has a density of 8.69 kg/m3 mo. Assume that the copper is electrically neutral. b) Suppose that electrons are removed from the copper so that it has a net charge of 5.0 x 10-9 C (this is a typical number for capacitors in electronic circuits). Determine the number of electrons that have been removed. c) What fraction of the total...
The radius of a solid sphere is measured to be (6.00 ± 0.26) cm, and its mass is measured to be (1.80 ± 0.05) kg. Determine the density of the sphere in kilograms per cubic meter and the uncertainty in the density. (Use the correct number of significant figures. Use the following formula to calculate the uncertainty in the density:-=-+ -) Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully....
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