1. The volume of a public address system is adjusted to 45DB for audience at a...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1. The volume of a public address system is adjusted to 45DB for audience at a distance of 75m. A) What is the intensity of sound in watt/m2? B) What is intensity 50m away? 2. A source of sound sends out 500vibrations per second in air. How long are these sound waves at 20°C? 1. The volume of a public address system is adjusted to 45DB for audience at a distance of 75m. A) What is the intensity of sound in watt/m2? B) What is intensity 50m away? 2. A source of sound sends out 500vibrations per second in air. How long are these sound waves at 20°C?
Expert Answer:
Answer rating: 100% (QA)
1 aAs we know decibel level of sound is defined as Li 10 log I 120 Or 45 10 log l 120 O... View the full answer
Related Book For
Posted Date:
Students also viewed these physics questions
-
How does the volume of a completely submerged object compare with the volume of water displaced?
-
The volume of a wallet is 8.50 in3 Convert this value to m3, Using the definition 1 in. = 2.54 cm
-
The ability to estimate the volume of a tree based on a simple measurement, such as the tree's diameter, is important to the lumber industry, ecologists, and conservationists. Data on volume, in...
-
Can someone please help me with sections d, e, and f? Black and Shannon trave decided to fom a partnership. They have agreed that Black is to invest \( \$ 243,000 \) and that 5 hannon is to invest...
-
At which of the stress-management techniques are you best and worst? What can you do to improve your stress-management skills?
-
Serena and Bill Davis began operations of their furniture repair shop, Rumours Furniture Inc., on January 1, 2013. The companys fiscal year ends December 31. The trial balance on January 1, 2014, was...
-
FRAUD PREVENTION AND DETERRENCE IN ACTION Assume the following facts: thirty-day collection period. The invoice is used to post-sales to the accounting system. Checks are received in the mailroom and...
-
The following information is available for two different types of businesses for the 2016 accounting year. Hopkins CPAs is a service business that provides accounting services to small businesses....
-
28. Below is the model of a three-dimensional structure. Draw the front view of this model. Each cube is exactly inch in length, width, and height. Use a scale of 2:1. (2 marks) Back Top Front Left...
-
Calculate the value of CP at 298 K and 1 atm pressure predicted for CH4(g) and C2H4(g) by the classical equipartition theorem. Compare the predicted results with the experimental results and...
-
Let the function F, defined by 2x F(x)= 1 2 if 0x6 x + 6x-18 if 6 x36, 6 calculate a fish harvest in thousands of tons when x hundred fishing boats are used in a region. (a) Evaluate F(3) and...
-
Provide a response for each of the following, which should be treated as separate scenarios. (a) Ahmad has just learned about derivatives and in particular, how they can be used to conduct arbitrage....
-
Meridian Corporation owns 10% of the Somers Corp. stock. Somers distributed a $10,000 dividend to Meridian Corporation. Meridian Corp.'s taxable income (loss) before the dividend income and the...
-
What is your personalized definition or description of accounting? Have your preconceptions about accounting changed since starting your accounting studies, and if so, how? Can you identify any...
-
Consider the following information about the cost of a product: Direct materials $900 Direct labor 500 Factory overhead 200 Selling expenses 140 Administrative expenses 90. What is the cost of the...
-
Solve for x 12.8(13x)4.14
-
Identify and explain which country has a higher standard of living. China and USA are the countries
-
Why is it necessary to study the diffusion of molecules in biological systems?
-
For a t-curve with df = 6, use Table IV to find each t-value. a. t0.10 b. t0.025 c. t0.01
-
According to the Centers for Disease Control and Prevention publication HIV/AIDS Surveillance Report, Vol. 19, the number of AIDS cases in the United States in 2007, by gender and race, is as shown...
-
Given that 28.4% of all possible observations of the variable are less than 11, determine the area under the density curve that lies to the a. Left of 11. b. Right of 11.
-
Internet Inhand Ltd began producing netbooks on 1 July 2019. A unit of production passes through two processes manufacturing and finishing. Production data for the month of July are presented below....
-
Tsoulos, Tsoulakis and Associates is a small firm of architectural consultants. At 1 July 2018, three architects other than the principals, Tony Tsoulos and Maria Tsoulakis, are employed. The...
-
Melaleuca Manufacturing Ltd produces timber felling machines for the forestry industry around the world. Its two machines are the Tree Toppler, which cuts down trees and clears undergrowth, and the...
Study smarter with the SolutionInn App