Question

100 bulldozers have an I=40 dBa and emitt sound at a comparatively low freq. Is this...

100 bulldozers have an I=40 dBa and emitt sound at a comparatively low freq. Is this low frequency good or not in terms of attenuaatin the noise perceived in the town where the bulldozers work

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Low frequency means higher wavelenght.higher wavelenght sound waves need more time to generate and can travell longer distance than high frequency sound waves.attenuation means reduction in the intensity of a wave. low frequency sound is not affected much in space,so it has more power and it can affect a much more area rather than high frequency sound.one cant feel the noise of low frequency infrasonic sound but it does feel as a beat in heart.which is a more dangerous condition.so to set the noise as low frequency is not a good idea in accordance to public health.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
I have the following three products. In the past few months I have found I don't...
I have the following three products. In the past few months I have found I don't have time to make them as much as I want. Also when I make only one product I am left with some unsold. Number of Cars Produced Hour I can work in a week 100 Product Cars Trucks Bikes Market Demand 20 30 40 Selling Price 60 70 100 Variable costs 40 50 80 Hour required per unit 1 2 4 Select one: a....
I have the following three products. In the past few months I have found I don't...
I have the following three products. In the past few months I have found I don't have time to make them as much as I want. Also when I make only one product I am left with some unsold. Give the order of production. Hour I can work in a week 100 Product Cars Trucks Bikes Market Demand 20 30 40 Selling Price 60 70 100 Variable costs 40 50 80 Hour required per unit 1 2 4 Select one:...
HURRY! ONLY 40 MINUTES I have a cube 10 cm on a side. It floats in...
HURRY! ONLY 40 MINUTES I have a cube 10 cm on a side. It floats in water with 40% of its volume above water. What is the density of the cube? Show your work.
I have a couple of questions of topics that aren't 100% clear to me: How might...
I have a couple of questions of topics that aren't 100% clear to me: How might one use (R)-2-phenylpropanoic acid in a classical resolution scheme to separate a racemic mixture of 2-butanol into enantiomers? Use words and pictures to explain the specific steps you could use. (Hint: Consider the Fischer esterification and its reversibility) Where would you expect EAS to be most favorable on 4-methylcatechol? Explainyour choice completely in terms of steric and electronic effects. Thank you for any explanation...
Question : Design the low and high pass filter for the signal, x(t) = 10 sin...
Question : Design the low and high pass filter for the signal, x(t) = 10 sin (10 t) + 1 sin (1000 t) by MATLAB Is below answer right? at ?High pass , 5row shouldn't this change from sin(100*t) ? sin(1000*t) x = 10*sin(10*t) + 1*sin(100*t); ?   x = 10*sin(10*t) + 1*sin(1000*t); ??? ..................................................................................................................................................... ?Low pass clc; rng default Fs=2000; t=linspace(0,1,Fs); x=10*sin(10*t)+sin(1000*t)%given signal n=0.5*randn(size(t));%noise x1=x+n; fc=150; Wn=(2/Fs)*fc; b=fir1(20,Wn,'low',kaiser(21,3)); %fvtool(b,1,’Fs’,Fs) y=filter(b,1,x1); plot(t,x1,t,y) xlim([0 0.1]) xlabel('Time (s) ') ylabel('Amplitude') legend('Original Signal','Filtered Data')...
The data below were obtained to predict the sound frequency to which a person’s ear will...
The data below were obtained to predict the sound frequency to which a person’s ear will respond based upon the length of time a person has been exposed to a high level of noise. Here “length of exposure” is the amount of time in weeks that a person has been living close to a major airport and the “hearing range” is reported in thousand cycles per second. Length of exposure In weeks (Left) Hearing range In thousand cycles per second...
I have created images that I would like to have placed where the message is revealed?...
I have created images that I would like to have placed where the message is revealed? What is the best way to make it work. I tried to make it work and have not had much success. My images are saved as png's. Here is my original code. <!Doctype html> <html> <head> <meta charset="UTF-8"> <title>Dice Game</title> <link rel="stylesheet" type="text/css" href="demo.css"> </head> <body> <div class="row" align="center"> <div class="col-4"> <h3>Your Dice</h3> <img src="images/d1.png" width="100" height="100" alt="roll: 1" id="mydice1"> <img src="images/d1.png" width="100" height="100"...
  6. How much would I have in the bank at the end of 30 years if...
  6. How much would I have in the bank at the end of 30 years if I put $500 a year into an account and the interest rate was 4%. Show all work. 7. Use Benefit cost ratio analysis to determine the best alternative. Each alternative has an 6 year useful life. Assume 15% MARR. Show all work. A                     B                     C First cost                                 $560                $340                $120 Annual Benefit                        $140                $100                $40 Salvage                                    $40                  $0                    $0 8. Kruber company located Tennessee...
I have a question for my homework that says to react the following compounds with one...
I have a question for my homework that says to react the following compounds with one equivalent of NBS with CCl4, and that they give only one major product. Then we have to explain why we gave our answers. I think this was just an accident that my professor left it out of the question, but wouldn't the reaction with NBS and CCl4 also need heat or light and peroxides to work? I've done the questions as if they were...
Suppose you have 24 hours per day that you can allocate between leisure and working. (i)...
Suppose you have 24 hours per day that you can allocate between leisure and working. (i) Draw the budget constraint between “leisure hours” on the horizontal axis and “wage income” on the vertical when the wage rate is $40 per hour. Mark an optimum point A that is meaningful. Draw a new budget constraint when the wage rate falls to $30 per hour. Show a new optimum point B. (ii) On your indifference curve diagram, decompose the effect of the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT