1. The TL of 10 mm thick sheet of plywood at 1000 Hz is 34 dB....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. The TL of 10 mm thick sheet of plywood at 1000 Hz is 34 dB. Based on the Mass Law, what is the expected TL: a. At 63 Hz? b. At 31 Hz for a 20 mm thick sheet? 2. Two adjacent rehearsal rooms are separated by a 4" thick brick wall (TL250 Hz = 33 dB). The common wall is 10 m high and 10 m long. The total absorption in the receiving room is 200 metric sabins. A guitar playing in one room produces a measured sound pressure level at 250 Hz of 80 dB in that source room. a. What is the NR at 250 Hz? b. What would the level be in the receiving room? 1. The TL of 10 mm thick sheet of plywood at 1000 Hz is 34 dB. Based on the Mass Law, what is the expected TL: a. At 63 Hz? b. At 31 Hz for a 20 mm thick sheet? 2. Two adjacent rehearsal rooms are separated by a 4" thick brick wall (TL250 Hz = 33 dB). The common wall is 10 m high and 10 m long. The total absorption in the receiving room is 200 metric sabins. A guitar playing in one room produces a measured sound pressure level at 250 Hz of 80 dB in that source room. a. What is the NR at 250 Hz? b. What would the level be in the receiving room?
Expert Answer:
Answer rating: 100% (QA)
1 a At 63 Hz the expected TL would be 28 dB b At 31 Hz for a 20 mm thick sheet the expect... View the full answer
Related Book For
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
Posted Date:
Students also viewed these accounting questions
-
A tank has two rooms separated by a membrane. Room A has 1 kg air and volume 0.5 m3, room B has 0.75 m3 air with density 0.8 kg/m3. The membrane is broken and the air comes to a uniform state. Find...
-
A 1.2 2.4-Ã m sheet of plywood having a mass of 17 kg has been temporarily placed among three pipe supports. The lower edge of the sheet rests on small collars A and B and its upper edge leans...
-
A 2.5 x 2.5 m steel sheet 1.5 mm thick is removed from an annealing oven at a uniform temperature of 425?C and placed in a large room at 20?C in a horizontal position.(a) Calculate the rate of heat...
-
Mary is 30 years old and married to Mark, age 36. Mark passed away on January 30, 2021. Mark was unemployed and had no income in 2021 due to his illness. Marys seven-year-old daughter, Jenny, lived...
-
Gordons plants has the following partial income statement for 2015: What is the degree of financial leverage for Gordons? What does this value mean? $ 4,500 (2,000) $ 2,500 Earnings before interest...
-
Consider an ideal combined reheat and regenerative cycle in which steam enters the high-pressure turbine at 3.5 MPa, 400C, and is extracted to an open feedwater heater at 0.8 MPa with exit as...
-
Consider a parallel-plate capacitor with charge \(+q\) on the top plate and \(-q\) on the other, and a plate area that is large relative to the separation distance. Contrast this with a spherical...
-
Information concerning Tully Corporations intangible assets is as follows: a. On January 1, 2007 Tully signed an agreement to operate as a franchisee of Rapid Copy Service, Inc., for an initial...
-
4 16. The mean and variance of a binomial distribution area and respectively. If P(X = 1) = then P(X = 4 or 5) is equal to: 243 (a) 1/159 64 (b) $ 16 (c) 81 925 145 (d) 27 243 17. Let E1, E2, E3 be...
-
Blue Angel Investors has a success ratio of 10% with its venture funding. Blue Angel requires a rate of return of 20% for its portfolio of lending, and the average length on its loan is five years....
-
consider a sectangular waveguide with hansverse amxlm driven with an angular frequency w: radls. which transverse electric (TE) modes will propagate in this waveguide? a) TELO, TEO TEO c) TEOI, TE10...
-
For this journal, utilize course concepts to identify the impact of change and innovation on organizational processes. Discuss strategic analysis decisions in the next five years, and what we need to...
-
We are going to continue practicing scripting by updating the JavaScript file that we have created from Self-study 3 JavaScript through the practical exercise called, "Coding Challenge 1 Who is the...
-
How do I post this to the ledger They purchased $5,650 worth of Inventory to be used throughout the next few months building the magic pencils. They put it on their open trade account with...
-
Suppose all the assumptions of the Ricardian Model hold in a hypothetical world with two countries: Home and Foreign. Home has 1,200 workers. One worker can produce 1/3 units of apples or units of...
-
Describe the levels of global leadership competencies. Identify the level where you feel you are operating and what steps do you think you need to take in order to reach the next level? explain
-
Use the discriminant to determine the number of real solutions of the equation. 4x^(2)+3x+(13)/(2)=0 infinitely many real solutions two distinct real solutions one real solution no real solution 2...
-
In Problem use absolute value on a graphing calculator to find the area between the curve and the x axis over the given interval. Find answers to two decimal places. y = x 3 ln x; 0.1 x 3.1
-
Light is incident at an angle with the normal to a vertical plane containing two slits of separation d (Figure). Show that the interference maxima are located at angles given by sin + sin = m/d.
-
Repeat Problem 91 if the gas is argon.
-
An object on a horizontal spring oscillates with a period of 4.5s. If the object is suspended from the spring vertically, by how much is the spring stretched from its natural length when the object...
-
Use the magnitudes (Richter scale) of the earthquakes listed in Data Set 16 in Appendix B. In 1989, the San Francisco Bay Area was struck with an earthquake that measured 7.0 on the Richter scale....
-
James Madison, the fourth President of the United States, was 163 cm tall. His height converts to the z score of -2.28 when included among the heights of all presidents. Is his height above or below...
-
Carbon monoxide is measured in San Francisco on five different days, and the mean of those five values is 0.62 parts per million. Four of the values (in parts per million) are 0.3, 0.4, 1.1, and 0.7....
Study smarter with the SolutionInn App