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above a peninsula of land. the length of the box is 25 km, its width is 80 km, and a radiation inversion restricts mixing to 25 m. Wind is blowing clean air into the long dimention of the box at 0.8 m/s. Between 4 and 6 pm there are 100,000 vehicles on the road, each being driven 60 km and each emitting 6 g/km of CO.
a) Find the average rate of CO emissions during this two hour period
b) Find an estimate of the concentration of CO at 6 PM if there was no CO in the air at 4 PM. (Assume that CO is conservative and that there is instantaneous and complete mixing in the box)
Determine the magnitude and direction of the force P in so that the resultant of P and the 900N force is a vertical force of 2700N directed downward using.
a 1 meter diameter cylindrical mass is connected to a 2 meter wide rectangular gate. the gate is to open when the water level drops below 2.5 meters. Determine the required value of the mass of the cylinder in kgs.
Vehicles arrive at a toll booth with a mean arrival rate of 2 veh/min (the time between arrivals is exponentially distributed). The toll booth operator processes vehicles (collects tolls) at a uniform deterministic rate of one every 20 seconds. Wh..
Lift Charts in direct marketing, The mass-mailing business is often used to illustrate the use of lift charts. Another real world application where the lift charts can be used
For some minerals color is a diagnostic property making identification rather easy. However, certain minerals can also occur in a wide variety of colors making color a poor tool for identification. List different colors for the mineral quartz lo..
Write a paper on steel sustainability.
Civil and Environmental Engineering Question, 1. How is the problem of technology choice related to process selection and product design?
A body weighing 120 lb with a flat surface area of 2 ft^2 slides down a lubricated inclined plane making a 30 degree with the horizontal. For a viscosity of 0.002 lb*s/ft^2 and body speed of 3 ft/s, determine the lubricant film thickness.
As a highway patrol officer, you are patricipating in a speed trap. A car passes your patrol car which you clock at 55 mph. One and a half minutes later, your partner in another patrol car situated two miles away from you, clocks the same car at 5..
what policies were implemented during and after WW1,WW2,Cold war?
Two carts with masses of 4.72 kg and 2.84 kg move toward each other on a frictionless track with speeds of 4.86 m/s and 3.97 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
Two strips of a plastics material are bonded together as shown. The average shearing stress in the glue must be limited to 1000 kpa.
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