A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into
Question:
A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the forward hemisphere, 25% toward the back. You measure an 85 dB sound intensity level when standing 3.5 m in front of and 2.5 m below the speaker.
What is the speaker’s power output?
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 68% (16 reviews)
Model Assume the of the energy directed forward is uniformly distributed in the ...View the full answer
Answered By
Anthony Ngatia
I have three academic degrees i.e bachelors degree in Education(English & Literature),bachelors degree in business administration(entrepreneurship option),and masters degree in business administration(strategic management) in addition to a diploma in business management.I have spent much of my life in the academia where I have taught at high school,middle level colleges level and at university level.I have been an active academic essays writer since 2011 where I have worked with some of the most reputable essay companies based in Europe and in the US.I have over the years perfected my academic writing skills as a result of tackling numerous different assignments.I do not plagiarize and I maintain competitive quality in all the assignments that I handle.I am driven by strong work ethics and a firm conviction that I should "Do Unto others as I would Like them to do to me".
4.80+
76+ Reviews
152+ Question Solved
Related Book For
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
Question Posted:
Students also viewed these Physics questions
-
A loudspeaker on a tall pole broadcasts sound waves equally in all directions. What is the speakers power output if the sound intensity level is 90 dB at a distance of 20 m?
-
A loudspeaker is connected to an amplifier as shown in Fig. 2.139. If a 10-Ω loudspeaker draws the maximum power of 12 W from the amplifier, determine the maximum power a 4-Ω...
-
A wireless transmitting microphone is mounted on a small platform that can roll down an incline, directly away from a loudspeaker that is mounted at the top of the incline. The loudspeaker broadcasts...
-
A Mechanical Design Company produces an innovative design of Battery used for electric cars. The standard design of producing one(1) unit of Battery is provided in the bill of materials BOM which...
-
Prairie Snow removal began 2014 with total assets of $44,000 and total liabilities of $18,000. At the end of 2014, the business's total assets were $50,000 and total liabilities were $20,000....
-
Zip codes. In Exercises 714, determine whether the data are qualitative or quantitative. Explain your reasoning.
-
Miltons bonds pay interest semiannually on July 1 and January 1. If its fiscal year ends on September 30, which statement is true of Miltons year-end adjusting journal entry for bond interest? a....
-
Why do some transactions require an entry in a fund and another in an account group? What impact would there be if a journal entry were made only in the fund or only in the account group?
-
The debt-equity ratio is 60%. The after-tax cost of debt is 15%. The cost of equity is 20%. What is the WACC?
-
A fitness enthusiast is trying to strengthen his calf muscles. He uses the exercise machine below. His heels apply a force to the padded bar. This lifts the heavy weights. a. The centre of mass of...
-
A starship approaches its home planet at a speed of 0.10c. When it is 54 10 6 km away, it uses its green laser beam ( = 540 nm) to signal its approach. a. How long does the signal take to travel to...
-
Wavelengths of light from a distant galaxy are found to be 0.50% longer than the corresponding wavelengths measured in a terrestrial laboratory. Is the galaxy approaching or receding from the earth?...
-
Hector Caldwell gets his paycheck from his employer, indorses the back of the check by signing his name, and goes to cash it at his credit union. On the way, he loses the check. Paige finds the...
-
When is government censorship considered constitutional in the United States? What legal restraints can be used in the U.S. to silence political dissent? What forms of sedition have been historically...
-
1) Make a simple analysis of the relationship between banks and the economy in general. 2) Briefly describe the structure of the financial system. 3) Make a brief analysis of the banking structure in...
-
Calculate the numbers represented by (a) to (d) in the table provided below: Principal (R) Interest rate Term in years Simple interest over the term (R) (a) R12 500 9.0% 6 (b) 8.0% 5 10 000 R20 000...
-
Presented below is information related to the Annandale Division of Lumber, Inc. Contribution margin $ 1 , 2 1 1 , 9 0 0 Controllable margin $ 8 9 5 , 1 8 0 Average operating assets $ 4 , 0 6 9 , 0 0...
-
What role do issues like child care play in the the process of women advancing to leadership positions? In an interview with Bloomberg, former New Zealand Prime Minister Helen Clark discusses the...
-
According to Figure 19.3, which has the higher boiling point: gasoline or kerosene? Figure 19.3 - Natural gas COOLER Gasoline Fractionating tower Kerosene Pipe still Diesel Lubricants Crud e oil...
-
2. Assume a person bends forward to lift a load "with his back" as shown in Figure P12.42a. The person's spine piv- ots mainly at the fifth lumbar vertebra, with the principal supporting force...
-
Compare the rate of power lost to air resistance for the following two vehicles at 60 km/h and 120 km/h: (a) General Motors EV1 with c d A 0.37m2, (b) Hummer H2 with c d A 2.45m2.
-
Consider an idealized cylinder of cross-sectional area A moving along its axis through an idealized diffuse gas of air molecules with vanishing initial velocity. Assume that the air molecules are...
-
One way to estimate the effective area of an object is to measure its limiting velocity v falling in air. Explain how this works and find the expression for A eff as a function of m (the mass of the...
-
On January 2, Year 4, Brady Ltd., a private company, purchased 80% of the outstanding shares of Partridge Ltd. for $5,420,000. Partridge's statement of financial position and the fair values of its...
-
We have initially touched on some critical elements of an IT security program through our readings, class discussions, and class lectures. For this discussion provide a substantive post depicting...
-
Read string fav_color from input, and output the following, all separated by spaces: 'My favorite color' The value of fav_color 'contains' The length of fav_color 'characters ?
Study smarter with the SolutionInn App