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An aerosol with a lognormal size distribution has a count median diameter of 2.0 micron and a geometric standard deviation of 2.2. If the mass concentration is 1 mg/cubic meter what is the number co
In a falling-head permeability test the initial head of 1.5m dropped to 0.5m in 4 h the diameter of the standpipe being 5mm. The soil specimen was 200mm long by 100mm in diameter.
A 27ft beam has a uniform load of 6kip/ft. along its entire length. From left to right x=0ft to x=27ft. At x=0 ft it is pinned and at x=18 ft there is a roller. So, the 9 ft end section is cantileve
For a 30ft simply supported beam, there is a uniform load of 1.5 k/ft. along the length and two point loads of 20 kips each spaced at (from x=0 to x=30ft left to right) x=10ft and x= 20 ft.
The carrier does not intend to offer weekend service. Therefore, the carrier will offer daily round-trip flights Monday through Friday. The following table presents passenger demand estimates and fa
diameter, are connected by the gears shown. Knowing that G=11.2*10^6 psi, determine (a) the angle through which end A of shaft AB rotates, (b) the angle through which end E of shaft EF rotates.
An 8x12 column of No. 1 Spruce-Pine-Fir(South) has an unbraced length for buckling about the strong x axis of 16 feet and an unbraced length for buckling about the weak y axis of 8 ft. Cm = 1.0 and
A 4x4 carries an axial compressive force caused by dead, love, and roof live loads. Lumber is No. 1 Douglas Fir-Larch. Cm = 1.0 , Ct = 1.0, Ci = 1.0. The unbraced length of the member is 12 ft.
What are the basic components of a building. Discuss the main requirements of each part to fulfill its primary function.
If the toluene concentration in the water supply is 1,000 ppb, the treatment objective is 5 ppb, and the flow of water is 378 L/min (100 gpm), what mass of PAC must be placed in a contact basin on a
How many extractions are required to decrease the concentration of phenol below 100 mg/L in a wastewater containing 2000 mg/L of phenol if an ether-to-watewater ratio of 0.2 by volume is used in eac
A horizontal water jet impinges against a vertical flat plate at 25 ft/s and splashes off the sides in the vertical plane. If a horizontal force of 350 lbf is required to hold the plate against the
A suction device is being designed based on the Venturi principle to life objects in submerged water. The operating water temperature is 50C. The suction cup is located 1.3 m below the water surface
A piston cylinder contains 0.8kg of steam (water vapor) at 300 deg C and 1MPa absolute. The steam is cooled at constant pressure until half of the mass condenses.
A .2kg mass of argon gas fills a .05m^3 piston-cylinder volume at a pressure of 400 kPa absolute. The piston induced pressure is changed until the volume expands to twice its original value, while t
Ends A and D of the two solid steel shafts AB and CD are fixed, while ends B and C are connected to gears. Knowing that a 4-kN(m) torque T is applied to gear B, determine the maximum shearing stress
the roller coaster track consists of a circle in a vertical plane of radius 150m. find the magnitude of the total acceleration of the roller coaster if, at the time shown, the car is moving at 50 km
determine the maximum horizontal distance that a projectile will have at a height of 60 m above the orgin if it is fired at an angle at 70 degrees from the horizontal with a velocity of 50 m/s
The plus sight and minus sight distances were kept approximately equal. Readings (in feet) listed in the order taken are 5.06 (+s) on BM tree, 8.99 (-s) and 7.33 (+s) on TPI, 2.52 (-s) and 4.85 (+s)
Perform a material balance on substrate (S) around a chemostat (completely mixed reactor without recycle) assuming a first-order removal for a substrate with a rate constant of 0.5 hr-1.
The spring loaded supporting rods AB and AC in the figure below aer used as shock absorbers for transporting fragile loads. Knowing that the elastic spring constants for the rods AB and AC are kab =
You and your friend go into sports bar where a dart throwing competition is going on.you buy m darts at 1 dollar each.you throw these m darts at the board.Of these, N darts hit within the inner circ
write a computer program that generates a sequence of binomial random variables with parameters n=20 and p=0.3. a) use the inverse c.d.f approach
Write a computer program that generates a sequence of random variables from a normal distribution with mean 5 and standard deviation 2. a) Verify that sample mean and the sample variance converge to
Transportation need to evaluate the time spent in traveling from city A to city B. The distance between the two cities is a variable because the macro developed is to be used for other cities.