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A rectangular channel is to carry 200 cfs. The mean velocity must be greater than 2.5 fps. The channel bottom width should be about twice the channel depth. Find the channel cross section and the re
A rectangular channel carries a flow of 10 cfs/ft of width. Plot a curve of specific energy vs depth. Compute the minimum value of specific energy and the critical depth. What are the alternative de
The variation in the diffusion coefficient with temperature, over an appropriate range of temperature, can usually be approximated as follows: D= (D0)e^-(Q/(KT) where, Q = activation energy (eV/atom
If the load effect has a mean value of 88 kips and a standard deviation of 1.8 kips. If the nominal material strength is 160 kips Determine the followings 1- The probability of failure of the struct
determine the highest real root of f(x)= 0.95x^3 - 5.9x^2 +10.9x-6: (a)graphically. (b) using the newton raphson method(three iterations, xi= 3.5). (c) using the secant method(three iterations, xi-1
given f(x) = -2x^6 - 1.5x^4 + 10x +2. use a root location technique to determine the maximum of this function. perform iterations until the approximate relative error falls below 5%.
Determine the major and minor principal stresses at failure and the effective stress friction angle (assume c' = 0). Plot the Mohr diagram.
Find the dimensions of a rectangular concrete channel to carry a flow of 150 m3/s, with bottom slope 0.015, and mean velocity 10.2 m/s.
Determine the force in member AB Determine the force in member AE Determine the force in member BC Determine the force in member BE Determine the force in member CD
Write a User Defined Function named SimpleCharacter that takes the character inputs either "Coffee" or "Tea" and returns the outputs High Octane for an input of "Coffee" and Low Octane for an input
A separator accepts waste oil at 70% oil and 30% water by weight. The top product stream is pure oil while the bottom underflow contains 10% oil. If a flow of 20 gal/min is fed to the tank, how much
Raw primary sludge at a solids concentration of 4% is mixed with waste activated sludge at a solids concentration of 0.5%. The flows are 20 and 24 gal/min, respectively. What is the resulting solids
The 12 in diameter cast iron pipe is 2000ft long, the water surface is El 200 in the reservoir on the left B. El 175 on the right. A. Find V and Q by hazen-williams for a new cast iron pipe (Chw=130)
The 30-Mg freight car A and 15-Mg freight car B are moving toward each other with the velocities VA= 20 km/h to the right and VB= 10 km/h to the left. the spring constant on car A is k= 3MN/m.
For an elevated storage tank , if the minimum allowable pressure = 300 kPa, Height of pipe system at low-pressure service location = 6 m, and head loss from tank to service location: average daily
The 800 mm diameter shaft is made of A-36 steel. If it is subjected to the uniform distributed torque of 5kN*m/m, determine the angle of twist of end A with respect to B.
The floor area of each floor in these buildings is 400 m^2. The buildings are separated by large lawns so that the (Exposure + Communication) factor = 1.2.
Given the EPA acceptable risk level of 1 cancer in a million, what is the maximum concentration of TCE you can tolerate at the dry cleaning facility and keep your incremental cancer risk below the a
Suppose 2.3 g/day of vinyl chloride, with a half-life of 1 day, leaks into a 20,000 m3 pond. Suppose an adult obtains his drinking water from the pond and consumes the water daily for 7 years
Calculate expected error L if a theodolite has direct angular accuracy of 10" and a distance of 1500m was measured.
A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.66ft/sec2. What is the object's mass in kilograms?
A car traveling over a hill at constant speed starts to lose contact with the ground at O. If the radius of curvature of the hill is 85 m, determine the speed of the car at O.
A small package of weight W is projected into a vertical return loop at A with a velocity Vo. The package travels without friction along a circle of radius "r" and is deposited on a horizontal surfa
a mountain water reservoir in a national park is to provide water at a flow rate of Q= 200 gpm and a minimum pressure of 40 psig in the lodge of the valley 200 ft below the reservoir.
The line of sight of a level falls at a rate if 0.122ft/ 100 ft when the level bubble is centered. A backsight of 4.782 is taken on point A, which is at 75 ft from the level. the elevation of a is 4