On a workday, the average decibel level of a busy street is 72 dB, with 40...
On a workday, the average decibel level of a busy street is 72 dB, with 40 cars passing a given point every minute. If the number of cars is reduced to 10 every minute on a weekend, what is the decibel level of the street?
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On a workday, the average decibel level of a busy street is 72
dB, with 40...
In the afternoon, the decibel level of a busy freeway is 85 dB with 90 cars...
In the afternoon, the decibel level of a busy freeway is 85 dB with 90 cars passing a given point every minute. Late atnight, the traffic flow is only 8 cars per minute. What is the late-night decibel level?
Two pipes of equal length are each open at one end. Each has a fundamental frequency...
Two pipes of equal length are each open at one end. Each has a fundamental frequency of 460 Hz at 280 K. In one pipe the air temperature is increased to 285 K. If the two pipes are sounded together, what beat frequency results? Need Help? -/2 points SerCP11 14.A.P.077. My Notes Ask Your Teacher On a workday, the average decibel level of a busy street is 66 dB, with 120 cars passing given point every minute. If the number...
Prof. Bohn Worksheet 12.1 At a busy street corner, the sound level is 75 dB. What...
Prof. Bohn Worksheet 12.1 At a busy street corner, the sound level is 75 dB. What is the intensity of sound there? 1. 2. A trumpeter plays with a sound level of 72 dB. Three equally loud trumpeters join in. What is the new sound level?
. At your apartment, you hear the busy road (the dB level of a freeway is...
. At your apartment, you hear the busy road (the dB level of a freeway is 80 dB from 1.00 m away) and measure the noise at a constant level of 45 dB. a) What is the power output of traffic on the road? b) How far away is your house from the road? c) How far from the road would you need to be for the sound to measure at 20 dB? d) Town Hall is planning to add...
A trumpet can be heard with 100 db at 10 m. What is the decibel level...
A trumpet can be heard with 100 db at 10 m. What is the decibel level at 25?
At your house, you hear the busy freeway (the dB level of a freeway is 80...
At your house, you hear the busy freeway (the dB level of a freeway is 80 dB from 1.00 m away) and measure the noise at a constant level of 45 dB. A. What is the power output of traffic on the freeway? B. How far away is your house from the freeway? C. How far from the freeway would you need to be for the sound to measure at 20 dB? D. Town Hall is planning to add panels...
The decibel scale is a logarithmic scale for measuring the sound intensity level. Because the decibel...
The decibel scale is a logarithmic scale for measuring the sound intensity level. Because the decibel scale is logarithmic, it changes by an additive constant when the intensity as measured in W/m2 changes by a multiplicative factor. The number of decibels increases by 10 for a factor of 10 increase in intensity. The general formula for the sound intensity level, in decibels, corresponding to intensity I is β=10log(II0)dB, where I0 is a reference intensity. For sound waves, I0 is taken...
A decibel (dB) is a logarithmic unit used to express the ratio of two values of...
A decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, often sound level, power or intensity. It is given by: dB - 20 logx Where x is the ratio. Convert the following numbers to dB 1. x=01 dB- dB = 3. x 10 dB- 4. x=473 dB : 5.x=1000 dB= Problem 2 (10 points) Convert the following numbers in dBs to magnitudes (i.e. find x) . -55 dB -17 dB_ 4,...
please solve Calculate the IL dB level: 10-10watts/m2 20 dB 60 dB 50 dB 40 dB...
please solve
Calculate the IL dB level: 10-10watts/m2 20 dB 60 dB 50 dB 40 dB Question 9 Solve: [20Log(7/3]/3 2.45 3.69 3.62 2.32 < Previous use the best answer. You have 90 minutes. Please have ng math problems. Question 10 If you add a second sound of the same level, what 3 dB double the level 6 dB 1/2 the original level Previous Question 12 What is the dB SLP level for the following output level: 26 micropascals 2.28...
7. (6 points) The number of vehicles passing through a busy intersection between 8:00 a.m. and...
7. (6 points) The number of vehicles passing through a busy intersection between 8:00 a.m. and 10:00 a.m. was observed and recorded on every weekday morning of the last year. The sample mean is found to be * = 675 and the sample standard deviation is 8 = 25. (a) Approximately what proportion of observations are between 625 and 725 cars? (b) Approximately what proportion of observations are greater than 750 cars?
Two pipes of equal length are each open at one end. Each has a fundamental frequency of 460 Hz at 280 K. In one pipe the air temperature is increased to 285 K. If the two pipes are sounded together, what beat frequency results? Need Help? -/2 points SerCP11 14.A.P.077. My Notes Ask Your Teacher On a workday, the average decibel level of a busy street is 66 dB, with 120 cars passing given point every minute. If the number...
Prof. Bohn Worksheet 12.1 At a busy street corner, the sound level is 75 dB. What is the intensity of sound there? 1. 2. A trumpeter plays with a sound level of 72 dB. Three equally loud trumpeters join in. What is the new sound level?
. At your apartment, you hear the busy road (the dB level of a freeway is 80 dB from 1.00 m away) and measure the noise at a constant level of 45 dB. a) What is the power output of traffic on the road? b) How far away is your house from the road? c) How far from the road would you need to be for the sound to measure at 20 dB? d) Town Hall is planning to add...
A trumpet can be heard with 100 db at 10 m. What is the decibel level at 25?
A decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, often sound level, power or intensity. It is given by: dB - 20 logx Where x is the ratio. Convert the following numbers to dB 1. x=01 dB- dB = 3. x 10 dB- 4. x=473 dB : 5.x=1000 dB= Problem 2 (10 points) Convert the following numbers in dBs to magnitudes (i.e. find x) . -55 dB -17 dB_ 4,...
please solve
Calculate the IL dB level: 10-10watts/m2 20 dB 60 dB 50 dB 40 dB Question 9 Solve: [20Log(7/3]/3 2.45 3.69 3.62 2.32 < Previous use the best answer. You have 90 minutes. Please have ng math problems. Question 10 If you add a second sound of the same level, what 3 dB double the level 6 dB 1/2 the original level Previous Question 12 What is the dB SLP level for the following output level: 26 micropascals 2.28...
7. (6 points) The number of vehicles passing through a busy intersection between 8:00 a.m. and 10:00 a.m. was observed and recorded on every weekday morning of the last year. The sample mean is found to be * = 675 and the sample standard deviation is 8 = 25. (a) Approximately what proportion of observations are between 625 and 725 cars? (b) Approximately what proportion of observations are greater than 750 cars?
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