# 3. The NAAQs for particulate matter less than 10 microns (PM10)

Get college assignment help at uniessay writers 3. The NAAQs for particulate matter less than 10 microns (PM10) are an annual average concentration of 50 mg/m3 and a daily maximum of 150 mg/m3. For the region surrounding the city of Middleburgh, the typical background concentration of PM10 is 30mg/m3. The city has dimensions of 75 km x 75 km and an atmosphere mixing height of 900 m in the region. (a) Estimate the steady state PM10 concentration assuming a PM10 deposition velocity of 0.12 cm/s, prevailing wind velocity of 2.5 m/s, and a constant emission flux of PM10 0.82 mg/m2-s. (b) For a few days each year meteorological conditions drop the mixing height to 250m and wind speed to 0.8 m/s. Assuming the emission rate remains constant and unchanged during this period, estimate how long it will take before the daily maximum NAAQS for PM10 is exceeded.

## see the attached file to see the full questions 1) To

see the attached file to see the full questions 1) To keep a door closed, a wooden stick is wedged between the floor and the doorknob. The stick exerts at B a 45-lb force directed along line AB. Replace that force with an equivalent force-couple system at C. 2) Gear C is rigidly attached to arm AB. If the forces and couple shown can be reduced to a single equivalent force at A, determine the equivalent force and the magnitude of the couple M. 3) As plastic bushings are inserted into a 3-in.-diameter cylindrical sheet metal container, the insertion tool exerts the forces shown on the enclosure. Each of the forces is parallel to one of the coordinate axes. Replace these forces with an equivalent force-couple system at C. 4) Gear C is rigidly attached to arm AB. If the forces and couple shown can be reduced to a single equivalent force at A, determine the equivalent force and the magnitude of the couple M. 5) The tension in the cable attached to the end C of an adjustable boom ABC is 1000 N. Replace the force exerted by the cable at C with an equivalent force-couple system (a) at A, (b) at B.

## 68. A typical electric water heater has an efficiency of 90%

68. A typical electric water heater has an efficiency of 90% and costs €390 a year to operate at a unit cost of electricity of €0.08/kWh. A typical heat pump powered water heater has a COP of 2.2 but costs about €800.00 more to install. Determine how many years it will take for the heat pump water heater to pay for its cost differential from the energy it saves.

## Metro city planners proposes that a company conserve its water supply

Metro city planners proposes that a company conserve its water supply by replacing all the community’s toilets with low-flush models that use only 2 liters per flush. Assume that there is about 1toilet for every 3 person,that existing toilets use an average of 15 liters per flush, that a toilet is flushed on average 14 times per day, and that the cost to install each new toilet is \$150. write a program that would estimate the magnitude (liters/day) and cost of the water saved based on the community’s population

## a package is dropped from the plane which is flying with

a package is dropped from the plane which is flying with a constant horizontal velocity of va=150ft/s. determine the normal and tangential components of acceleration and the radius of curvature of the path of motion (a) at the moment the package is released at A, where it has a horizontal velocity of va=150ft/s and (b) just before it strikes the ground at B. The plane is 1500 ft high.

## A square 3m x 3m gate is located in the 45*

A square 3m x 3m gate is located in the 45* sloping side of a dam. Some measurements indicate that the resultant force of the water on the gate is 500kN.(a)Determine the preassure at the bottom of the gate.(b)Show on a sketch where this force acts.

## A three-phase, 60 Hz transmission line has the following parameters R

A three-phase, 60 Hz transmission line has the following parameters R = 0.25 Ohms/mi, X = 1.0 Ohms/mi, and Y = 5.0uS/mi. The line is 200 mi long and it delivers 150 MW at 220 kV and unity power factor to a substation at its receiving end. a) Calculate the voltage, current, power factor, and real power at the sending end. b) Calculate the voltage regulation of the line

## In a prototype testing,a 60degree rosette was mounted on the surface

In a prototype testing,a 60degree rosette was mounted on the surface of a chassis of a racing car. The following readings were obtained for each gauge: Ea=-750×10^-6 Eb=420×10^-6 Ec=540×10^-6 Qa) By using the transformation equations, determine the prncipal strains and the maximum in-plane shear strain. Qb) Assuming plane stress, calculate the two principal stresses and their directions with respect to the x-axis of the rosette and hence determine the factor of safety of the chassis against yielding given that the Young’s modulus, E=210GPa, yeild strength, fy=450MPa, and the Poisson’s ratio, v=0.25 Qc) By plotting the Mohr’s circle using the two principal stresses, determine the normal and shear stresses acting on the plane perpendicular to the x-axis of the strain rosette.

## I want solutions of questions 5 and 6 from the assignment

I want solutions of questions 5 and 6 from the assignment file attached. Thank you

## The semicircular geared bracket shown below is subjected to an 80N

The semicircular geared bracket shown below is subjected to an 80N vertical force as shown. It acts on a fixed, stationary gear centred at D and is guided by frictionless pins at A and B which are attached to a backing plate E. Determine the resulting moment on the lower gear about point D and the reactions at pins A and B. You may neglect the weight of the bracket in your analysis

## The assembly is composed of three homogeneous bodies: the 50-lb cylinder,

Get college assignment help at uniessay writers The assembly is composed of three homogeneous bodies: the 50-lb cylinder, the 10-lb slender rod and the 20-lb sphere. The origin is at the midpoint of the slender rod.

## A insulated steel tank is divided into two parts of 3

A insulated steel tank is divided into two parts of 3 m each by an initially locked piston. Side A has air at 200 kPa, 300 K, and side B has air at 1.0 MPa, 1000 K. The piston is now unlocked so it is free to move, and it conducts heat so the air comes to a uniform temperature . Find the mass in both A and B, and the final and .

## 2. The maximum eight-hour average concentration of carbon monoxide (CO) in

2. The maximum eight-hour average concentration of carbon monoxide (CO) in an urban area is measured to be 15 ppm. The NAAQS is 9 ppmv (equivalent to 10.3 mg/m3 estimated at P = 1 atm and T = 298.25 ˚K). Automobile emissions are believed to be the only major source of CO; it is assumed there is no background contribution for other sources. Assume also that CO can be modeled as chemically non-reactive over the period of interest. Answer the following questions: a) If the average wind speed is 3m/s and the urban area has the dimension of 100 x 100 km with a mixing height of 500m, what is the steady state emission rate (mg/m2-s) of CO by the automobiles that would lead to the measured city air concentration of CO of 15 ppmv? b)How much of a reduction in the automobile emission rate would be required to achieve the maximum eight-hour average NAAQS for CO at steady state 9ppmv (10.3 mg/m3)?

## 4. [5 points] You are working as a project analyst for

4. [5 points] You are working as a project analyst for the local gas utility, and you have been placed on a project to install an 11,000 foot segment of gas transmission line. The initial schedule called for 500 feet of pipeline to be installed each week, with the total construction cost projected to be \$25 million. After 8 weeks, 4750’ of pipeline has been installed at a cost of \$11.25 million. a. What is the original estimated duration of the project? b. What is the expected duration given productivity experienced? What is the earned value after 8 weeks? c. Is the project over or under budget after 8 weeks? By how much? d. Is the project ahead or behind schedule? By how much relative to the original schedule? e. What is the forecast final cost of the project?

## Create a function called MultiTable which populates a 2 dimensional array

Create a function called MultiTable which populates a 2 dimensional array to store and print a 5 by 5 multiplication table starting at user defined values and increasing by one. For example if the user specified 5 and 7 the table would look like:

## Using MATLAB Simulink, set up the negative feedback system of and

Using MATLAB Simulink, set up the negative feedback system of and find the value of the gain a) Plot the step response of the system at each value of t to yield over damped, under damped, critically damped and marginally stable responses b) At the output of the negative feedback system, cascade the transfer function

## aluminium is a trivalent element with atomic weight of 27 gm/mole

aluminium is a trivalent element with atomic weight of 27 gm/mole and density of 2.7*103 kg/m3, with a mean free time between electronic collissions of 4*10-14s. Calculate the current that flows in a 10m long AL wire that has a 1 mm2 cross section area when a potential of 2 V is applied to the end of the wire.

## Write a function called FindSA that finds the sum and average

Write a function called FindSA that finds the sum and average value of an array of integers. Use { -3, -5, 7, 8, 11, 13, -3, 8, 0 } to test your function. Finally include an overloaded version of the function that will work if the array is composed of floats. Include your code used to test this function.(hint: you can create temporary variables. Also, overloaded functions were defined in Unit 6) Must be a C program which runs one Visual Studio 2010. Thank you I included my program if it helps, I need help with the second part (overloading) #include using namespace std; void FindSA(int *array, int length) { int sum = 0; int average = 0; for (int i = 0; i < 9; i) sum =array[i]; average = sum/9; cout<<"Average: "<<average<< endl; cout<<"Summation: "<<sum<< endl; } int main( ) { int array = { -3, -5, 7, 8, 11, 13, -3, 8, 0 }; FindSA(array, 9); return 0; }

## Write a function called Transpose that takes a square matrix (i.e.

Write a function called Transpose that takes a square matrix (i.e. 2 dimensional array) and prints the transpose of the matrix to the screen. The transpose of a matrix is one where the rows of the old matrix become the columns of the new matrix. For example. M = [ 1 2 3 4 5 6 7 8 9 ] M_t = [ 1 4 7 2 5 8 3 6 9 ] Please write using C which will compile in Visual Studio 2010.

## “Some claim that no sustainable competitive advantages can be gained from

“Some claim that no sustainable competitive advantages can be gained from IT other than the capability of the IT organization itself.”

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