Suppose that a public address system emits sound uniformly in all directions and that there are no

Question:

Suppose that a public address system emits sound uniformly in all directions and that there are no reflections. The intensity at a location 22 m away from the sound source is 3.0 × 10-4 W/m2. What is the intensity at a spot that is 78 m away?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Physics

ISBN: 978-1118486894

10th edition

Authors: David Young, Shane Stadler

See More Books

Question Posted: Feb 14, 2017 02:25 AM

See More Questions

A source of sound is located at the center of two concentric spheres, parts of which are shown in the drawing. The source emits sound uniformly in all directions. On the spheres are drawn three small...
A woman stands a distance d from a loud motor that emits sound uniformly in all directions. The sound intensity at her position is an uncomfortable 3.2 10-3 W/m2. There are no reflections. At a...
A listener doubles his distance from a source that emits sound uniformly in all directions. There are no refl ections. By how many decibels does the sound intensity level change?
Four hospitals located in one county are cooperating to establish a centralized blood-bank facility to serve them all. On an xy coordinate grid of the county, the hospitals are found at the following...
Writing Improvement Exercise: Deleting Long Lead-Ins Your Task. Revise the following sentences to avoid long lead-ins. a. This message is to let you know that I received your e-mail and its...
For the following exercises, simplify the given expression. cos(x)sin x cot x + sin 2 x
Derive an equation for pressure on a submerged body in a fluid.
An Account class was specified in Programming Exercise 9.7. Design a new Account class as follows:? Add a new data field name of the String type to store the name of the customer.? Add a new...
Recording Amortization with a Change in Accounting Estimate On January 1 of Year 1, Kelley Company purchased a new patent for $22,440 and started amortizing it over its legal life of 20 years. At the...
A study reports an analysis of 35 key product categories. At the time of the study, 72.9% of the products sold were of a national brand, 23% were private label, and 4.1% were generic. Suppose that...
Suppose that in Conceptual Example 8 (see Figure 16.24) the person is producing 1.1 mW of sound power. Some of the sound is reflected from the floor and ceiling. The intensity of this reflected sound...
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. The speakers are 30.0 m apart and the total power of the sound coming...
Find the dot product of two vectors if their lengths are 6 and 1/3 and the angle between them is /4.
IPOs are often underpriced, meaning that the firm's offering price is arguably its true value. Explain how the bookbuilding process can contribute to the presence of IPO underpricing.
What technological innovations may change the existing structures of the banking industry? What technological innovations may cause disintermediation and disruption of the banking industry?
b) An investment is made of $25,000. Then for each year over the next 5 years, the investment pays back $10,000. What is the IRR?
A pair of boots with a rate of markup on cost of 30$ gave the retailer a markup of $14.5. what was the cost?
Investing in negatively correlated stocks reduces overall risks of a portfolio, but it has significant drawback as wells. What are some disadvantages?
Nitryl bromide, NO 2 Br, decomposes into nitrogen dioxide and bromine. A proposed mechanism is Write the rate law predicted by this mechanism. 2NO,Br(g) 2NO2(g) + Br2(g)
Medi-Exam Health Services, Inc. (MEHS), located in a major metropolitan area, provides annual physical screening examinations, including a routine physical, EKG, and blood and urine tests. MEUS's...
A long, hollow, cylindrical conductor (inner radius 2.0 mm, outer radius 4.0 mm) carries a current of 24 A distributed uniformly across its cross section. A long thin wire that is coaxial with the...
In Figure an arrangement known as Helmholtz coils consists of two circular coaxial coils, each of N turns and radius R, separated by distance s. The two coils carry equal currents i in the same...
A square loop of wire of edge length a carries current i. Show that, at the center of the loop, the magnitude of the magnetic field produced by the current is B = 22 0 i/a.
Based on the introductory in Public Finance, what do you think must be the main role of the government in our individual lives? Any references will do, as long as the answer is related to question...
Apercu Industries borrowed $92,350 for 200 days at 15% simple interest. Find the total interest they will pay (a) using bankers' rule and (b) using the exact method.
On January 4th, Mark went to the hospital to have an appendectomy. His deductible is $2,500 and since it is the beginning of the year, he has not contributed anything to the deductible yet. The total...

Suppose that a public address system emits sound uniformly in all directions and that there are no

Question:

Step by Step Answer:

Since the sound is emitted uniformly in all directions the intensity I at a distance r from t...View the full answer

Physics

Students also viewed these Modern Physics questions