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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)
Calculate the largest tolerable internal crack length for a 7075-T651 aluminum alloy component that is loaded to a stress one-half of its yield strength without catastrophic fracture. For the alloy, the plane strain fracture toughness is 24 and yi..
A barometer filed with non-toxic glycerin is used to measure standard sea level atmospheric pressure. neglecting the effect vapor pressure and surface tension. calculate the atmospheric pressure head.
An invar tape haviong a nominal length of 100ft and a croos -sectional area of 0.005sq in. was standardized under a tesion of 15lb. when the tape wa
Electric power is expensive, piping were built long time ago, population has grown,demand exceeds supply of water. What is the best thing to do ?
Set up a table showing curve elevations at the PVC, at the PVT, and at the half-station points along the curve. Compute the station and elevation of the curve turning point.
If vehicles are processed at a uniform deterministic rate of six per minute, determine when the queue will dissipate, the total delay, the maximum queue length (in vehicles), the longest vehicle delay under FIFO, and the longest vehicle delay unde..
You are given the following information about a dry-batchpaving operation. You are going to use one mixer that has a servicerate of 30 serives/hr. The dry-batch trucks you use forbringing concrete to the paver have an arrival rate of 7.5 arrivals/hr...
The drainage area upstream of a small dam is 20 acres. On a certainday the pond was 9 feet deep with a surface area of 1.6 acres. Thatnight, a 5.4 inch rainstorm caused a large rise in the pond
Compute the maximum acceptable tensile load Pu, on an angle L6x4x3/4 when connected to both legs. The 4 in. leg contains a single gage line of 7/8in. diameter bolts, and the 6in.
The temperature was 200C, and the void ratio (e) of the soil was 0.43. Calculate the "Coefficient of Permeability" in "centimeters per second" (Given, k = (QL)÷(A Δh t)).
The Statfjord B drilling platform, was built in Norway and towed 370km in 5 days to its present site in the North Sea in August 1981. It is the heaviest object ever moved by man
At what point on the expressway should the motorist step on her brakes in order to reduce her speed to the maximum allowable on the ramp just before entering the ramp
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