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Size an orifice and a weir for problem 2 on page 398 and 399 of the text book to achieve a flow rate of 1 cfs at an elevation of 102.5 feet and a total flow rate of 50 cfs at an elevation of 106 feet. Do not include the 21' weir at 104 feet.
air flows through a horizontal iron tube (e=0.15m) at Q=5.7x10-2 m3/s. find the pipe diameter if the pressure drop is 3.5kPa per 30.5m of pipe. air density = 1.23kh/m3 dynamic vicosity = 1.79 x 10-5 N.s/m2)
a container is supported by three cables that are attached to a ceiling. Determine the weight W of the container, knowing that the tension in cable AB is 6 kN
Nairobi has a birth rate of 3.3 individuals per individual per year and a death rate of 3.2 individuals per individual per year. If the carrying capacity were 105, what would the population be in 25 years
Two smooth circular cylinders of weight w=500N and radius r=200mm are connected at their centres by a string AB of length 600mm and rest upon a horizontal plane.
A minimum contact time of 30 mins is required to reduce the pathogen concentration from 100 pathogens/L to below 1 pathogen/L through a first order decay process. You plan on treating water at a rate of 1,000 gal/min.
A water treatment plant is processing water at s flow rate of 0.26m^3/s. The hydraulic detention times for the rapid mix tank, flocculation basin and the rectangular sedimentation basin are 10 sec, 30 min, 60 min, respectively.
a cantilevered bean has a lenght of L, a cross section area of A, and a flecural rigidity of EI. The free end is free to rotate and displace due to bending. derive the stiffnes of the cantilevered bean. Assume small deformations.
Determine the maximum external pull, in each of the four gears, for a tractor with 23-hp, and a max speed of 3.6 mph in 1st gear and a efficiency of 92%. When it is operated over a haul road whose slope is +2.53%.
Imagine a virtual expressway having 3 lanes. The administrating agency wants to detect traffic accidents in 5 minutes wherever they occur to dispatch an emergency response unit.
Groundwater has been contaminated with three chemicals: benzene (log Kow 2.13), pentachlorobenzene (log Kow 5.03), and naphthalene (log Kow 3.36). The aquifer (rs = 2.3 g/cm3; h = 0.4; foc = 0.02) has a gradient of 0.004 and hydraulic conductivity..
(1) To provide $750000 for th construction and $250000 for the initial equipment of a small engineering laboratory ; (2) to pay the $150000 per year laboratory operating cost; and (3) to pay for $100000 of replacement equipment every 4 years, beginn..
An important dimensionless parameter in certain types of fluid flow problems is the Froude number defined as V/(gl)^1/2 where V is a velocity, g the acceleration of gravity, and l a length.
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