Question: 4 A decibel, , is a unit used for measuring the relative loudness of sounds. Its value is given by the formula = 10 log

4 A decibel, , is a unit used for measuring the relative loudness of sounds. Its value is given by the formula = 10 log ( 0) where is the intensity of the sound in watts per square meter and 0 is the intensity threshold of the least audible sound a human can hear. Let 0 = 1012 watts/2 . a) Find the decibel rating for a sound with an intensity of 150 1012 watts/2 . b) Find the decibel rating for a sound with an intensity of 2.3 107 watts/2 . c) Two people are showing off the power of their car stereos. Enrique's stereo is rated at 120 decibels, and his friend's stereo is rated at 115 decibels. Enrique claims that his system is three times as intense as his friends' system, but his friend disagrees because it is only a difference of 5 decibels. Is Enrique's claim accurate? Support your answer with mathematical reasoning

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

19. A decibel, dB, is a unit used for measuring the relative loudness of sounds. Its value is given by the formula dB = 10 108 (.) where I is the intensity of the sound in watts per square meter and...

c) Using your app or the decibel meter, measure the sound intensity at several locations and record them in Table 1. A few suggested locations are listed in the Table, but you are not restricted to...

GROUP STUDY ACOUSTICS An acoustical phenomenon wherein the sound continues to persist after the cause of sound has stopped resulting in repeated reflections is calledEcho b. reverberation c....

MAT-111A - College Algebra Homework Problems 5 (20 Questions) The following questions were adapted from Blitzer, R. (2018). College Algebra (7th ed). NOTE: Be sure to show your work for the solution...

ch/api/v1/print/highered ... 26. Use common logarithms or natural logarithms and a calculator to evaluate the expression. All Bookmarks log 1811 Paper size Letter Print Use the change of base...

The decibel level in the front row of a rock concert in an open-air arena is 115 decibels, and the level in the back row is 110 decibels. How many times more intense would the sound be if you were...

(9) = Lw - 20log= - 10 log(4n) Ly = 10109 Iref = 10109 Was.4urz where r is a reference distance that is introduced to nondimensionalize the argument of the log.4.2 Pre-lab question Using the material...

Budgeting for Nonprofit Organizations Although budgeting is just as important for nonprofit organizations as for for-profit companies, the approach taken toward budgeting can be very different. In...

Each question in Part D is worth 1 mark. Questions in Part D may be either multiple-choice, numerical-response, or written response. 19. Simplify the following expression. Show all your work. * 1...

Budgeting for Nonprofit Organizations Although budgeting is just as important for nonprofit organizations as for for-profit companies, the approach taken toward budgeting can be very different. In...

On January 1, 20x1, an entity issues bonds with a face amount of P4,000,000 for P3,784,798. The bonds mature on December 31, 20x4 and pay annual interest of 16%. The effective interest rate is 18%....

Allergic reactions occur only in people who are sensitized by prior exposure to a specific allergen. Please identify the correct sequence of events that occur in a type I response. 1. The activated B...

Why is it claimed that AI is quickly becoming a key driver behind many of today's 'better, cheaper, faster' improvements that give businesses a competitive advantage ? Multiple Choice This is true...

Using JAVA. You have been given a partially implemented binary search tree class and a binary search tree node class to use. Your task is to implement the following methods in the binary search tree...

OLNEY COMPANY, INC. Insurance Deduction Register Name GRP. INS. HEALTH INS. CK. NO. Mangino, R. $0.85 $1.65 313 Flores, I. 0.85 1.65 314 Palmetto, C. 1.65 315 Waters, R. 0.85 1.65 316 Kroll, C. 0.85...

Donald Dump started a business that manufactures cleaning materials during 2018. The business, Dump Cleaning Chemicals is a registered VAT vendor and is registered to pay VAT on a bi-monthly basis....

A quality standard says that no more than 2 percent of the eggs sold in a store may be cracked (not broken, just cracked). In 3 cartons (12 eggs each carton), 2 eggs are cracked. (a) Calculate a...

If the four equations are all equated to zero, the system becomes "homogenous". What would be the "echelon form" of the equivalent homogenous linear system using Gauss Elimination? X + 2x, - X3 + 3x4...

Identify two current issues relating to DHL company that arise from contracts (with the link and short summary). Thanks.

4. Set up at least one work role that is important for you to master. Reflect on how you can use your time more efficiently, not necessarily spend more time, to perform better in this work role.

3. List four goals that are important to you. Then set up the roles that correspond to these goals. How will you shape your personal vision as a result of your goals and roles?

1. What does this mean for me?