1. For a plane sound wave traveling in air and has sound pressure level of 10...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. For a plane sound wave traveling in air and has sound pressure level of 10 dB find the acoustic root-mean-square pressure, acoustic root-mean-square particle velocity. acoustic root-mean-square particle density. 2. Calculate the root-mean-square pressure for a plane wave in water with the same particle velocity as the answer to 1. 3. Given that the ambient pressure, density, and absolute temperature of perfect gas. derive an expression for the variation of the sound speed in air with temperature. 4. For a plane sound wave in air of 100 Hz that has a peak aconstic pressure amplitude of 2 Pa find the root-mean-square pressure, intensity, intensity level, peak particle velocity amplitude, sound pressure level. 5. Two harmonic sources produce sound pressure levels of 90 dB and 93 dB. respectively. If the waves are in phase what will the resultant SPL at the observation point? If the two sources generate incoherent noise so that the resultant squared pressure is given by summing the squares of the individual pressures what will the resultant SPL? 6. Suppose that the SPL is 90 dB when one of the machines ceased to operate. Given that it was 95 dB when it was working. What is the SPL of the machine? 7. The noise level measured at a factory when not in operation is 60 dB. We also know that the SPL of the factory is 63 dB when only one machine is in operation. What would be the SPL when an identical machine is added? 8. A harmonic plane wave traveling in the positive a direction interferes with a harmonic plane wave of the same frequency traveling in the negative e-direction. The negative going wave has an amplitude which is one half that of the positive going wave. Derive general expressions for the net pressure amplitude, particle velocity amplitude and complex specific acoustic impedance. Express your results as a function of in terms of the amplitude of the positive going wave assuming that the phase difference between the two waves is zero at z = 0). 1. For a plane sound wave traveling in air and has sound pressure level of 10 dB find the acoustic root-mean-square pressure, acoustic root-mean-square particle velocity. acoustic root-mean-square particle density. 2. Calculate the root-mean-square pressure for a plane wave in water with the same particle velocity as the answer to 1. 3. Given that the ambient pressure, density, and absolute temperature of perfect gas. derive an expression for the variation of the sound speed in air with temperature. 4. For a plane sound wave in air of 100 Hz that has a peak aconstic pressure amplitude of 2 Pa find the root-mean-square pressure, intensity, intensity level, peak particle velocity amplitude, sound pressure level. 5. Two harmonic sources produce sound pressure levels of 90 dB and 93 dB. respectively. If the waves are in phase what will the resultant SPL at the observation point? If the two sources generate incoherent noise so that the resultant squared pressure is given by summing the squares of the individual pressures what will the resultant SPL? 6. Suppose that the SPL is 90 dB when one of the machines ceased to operate. Given that it was 95 dB when it was working. What is the SPL of the machine? 7. The noise level measured at a factory when not in operation is 60 dB. We also know that the SPL of the factory is 63 dB when only one machine is in operation. What would be the SPL when an identical machine is added? 8. A harmonic plane wave traveling in the positive a direction interferes with a harmonic plane wave of the same frequency traveling in the negative e-direction. The negative going wave has an amplitude which is one half that of the positive going wave. Derive general expressions for the net pressure amplitude, particle velocity amplitude and complex specific acoustic impedance. Express your results as a function of in terms of the amplitude of the positive going wave assuming that the phase difference between the two waves is zero at z = 0).
Expert Answer:
Answer rating: 100% (QA)
Q1 For a plane sound wave traveling in air and has sound pressure level of 40dB Find the acoustic rootmeansquare pressure acoustic rootmeansquare particle velocity acoustic rootmeansquare particle den... View the full answer
Related Book For
College Physics
ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett
Posted Date:
Students also viewed these accounting questions
-
A 2-kHz sound wave traveling in the x-direction in air was observed to have a differential pressure p(x, t) = 10N/m2 at x = 0 and t = 50 s. If the reference phase of p (x, t) is 36o, find a complete...
-
A person weighs 756 N in air and has a body-fat percentage of 28.1%. (a) What is the overall density of this person's body? (b) What is the volume of this person's body? (c) Find the apparent weight...
-
A plane sound wave propagates along the x axis. The damping coefficient of the wave is = 0.0230 m-1. At the point x = 0 the loudness level is L = 60 dB. Find: (a) The loudness level at a point with...
-
1. As a policy maker you should never worry much about those are eligible for Medicaid benefits and do not enroll. This is because they will enroll in public insurance if they need it. True or False?...
-
Bob Lillie started a retail clothing business two years ago. Lillies first year was very successful, but sales dropped 50 percent in the second year. A friend who is a business consultant analyzed...
-
If you make an account of 1000 people born in the year 2000 and find that half of them are still living in 2060, does this mean that one-quarter of them will be alive in 2120 and one-eighth of them...
-
What ethical problems should you be aware of in searching social medial sites?
-
First National Bank of Conway is considering installing two ATMs in its Southside branch. The new machines are expected to cost $37,000 apiece. Installation costs will amount to about $15,000 per...
-
When an FI mismatches the maturities of its assets and liabilities, it is exposed to a. credit risk. b. systematic risk. c. unsystematic risk. d. operating risk e. interest rate risk.
-
Random Inc. Cost data for the last 3 years Overhead Costs Units Produced January-17 $78,000 5,679 Use regression and show the equation used for Random to separate overhead into fixed and variable...
-
Analyze the material waste metric using control chart to monitor the proportion of defective units over time and conclude that the expected improvement has been achieved. Use below data to use a...
-
Given a = 1 3 . 4 9 \ pm 0 . 0 6 cm , b = 6 . 1 \ pm 0 . 5 cm . find the um ( the absolute uncertainty in m ) , where m is calculated with the following equation m = 2 ab 3
-
Find the probability of not surviving a car accident, given that the driver wore a seat belt.
-
Evander Inc. has decided to use the high-low method to estimate the total cost and the fixed and variable cost components of the total cost. The data for various levels of production are as follows:...
-
At its most base level, product packaging serves to protect the product inside. Packaging must keep the product safe during shipment between the manufacturing facility and the retailer and must...
-
Analyze each of the four transactions Ernie's Electronics had with Bert's Bargain House from the perspective of Ernie's Electronics. Required: Select the section of the statement of cash flows in...
-
Factory manager's salary should be labeled as which of the following types of costs: Group of answer choices Direct Materials Direct Labor Manufacturing Overhead Period Cost None of the Above
-
In Exercises find dy/dx by implicit differentiation. xy - y = x
-
A helicopter has blades of length 3.0 m, rotating at 2.0 rev/s about a central hub. If the vertical component of Earths magnetic field is 5.0 x 105 T, what is the emf induced between the blade tip...
-
A thin film of glass (n = 1.50) floats on a liquid of n = 1.35 and is illuminated by light of = 580 nm incident from air above it. Find the minimum thickness of the glass, other than zero, that will...
-
While driving at a constant speed of 80 km/h, you are passed by a car traveling at 120 km/h. If the frequency of light emitted by the taillights of the car that passes you is 4.3 x 1014 Hz, what...
-
Describe the process of valuing the entrepreneurs ownership interest in a two-stage investment. Refer to Tables 13.10 and 13.13. Data from table 13.10 Data from table 13.13 Market potential...
-
Euro Exchange Rates. The exchange rate that we consider is the amount of euros that one can purchase for one U.S. dollar. We have \(T=699\) daily observations from the period April 1, 2005, through...
-
Evaluate the current yield curve level and structure using the following screens: a. YCRV or GC to access yield curves. b. FWCV to determine implied forward rates. c. USoo03M, USoo06M, USoo09M, and...
Study smarter with the SolutionInn App