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A well of 0.4 m diameter fully penetrates a 25 m thick confined aquifer of coefficient of permeability of 12m/day. The well is located in the center of a circular island of radius 1 km.
For a circular curve with a radius R of 400 meter, what is the degree of curve by (a) arc definition and (b) chord definition
For turbulent flow in a circular pipe find r/r0 at the radial distance from the centerline where the mean velocity occurs
For the loading sown, use double integration method to determine: the equation of the elastic curve for the cantilever beam, the deflection at the free end and the slope at the free end.
Benefits associated with a project are $10,000 forever starting in year 1. The costs are $20,000 in year 0 and $20,000 in year 3. What is the B/C ratio at i=12% per year. First determine present wor
A four- lane undivided multilane highway ( two lanes in each direction) has 11- ft lanes and 5- ft shoulders. At one point along the highway there is a 4% upgrade that is 0.62 mi long. There are 15
Given that the average power plant produces 667 MW of electricity per year, there are 492 coal plants in the US, and a solar constant of 1.361 KW/m^2, how large of an area would one need to cover wi
The filters in the plant are 8.0x8.0m surface area and operate on the following schedule. A filter is cleaned once in each 24-hr period, and a backwash rate is 10.0 L*m^-2*s^-1 fora period of 8 min.
A 4 X 8-ft solar collector has water circulating through it at the rate of 1.0 gallon per minute (gpm) while exposed to sunlight with intensity 300 Btu/ft2-hr. Fifty percent of that sunlight is capt
A rapid sand filter has a loading rate of 8.00 m/h, surface dimension of 10m x 8m, an effective filtration rate of 7.70 m/h, and a production efficiency of 96 percent.
Analyze the frame by moment distribution. Determine all reactions and draw the shear and moment diagrams, locating points of inflection and labeling max and min shear and moment values.
A spherical gas container made of steel has a 5-m outer diameter and a wall thickness of 6 mm. Knowing the internal pressure is 350 kPa, determine te maximum normal stress and the maximum shearing s
The terrain in the in the immediate area does not allow for level measuring area. if the suveyour verifiies the diffence in elevation between the point measured from. and the point measured to, as 8
Assume that a gallon of gas contains 114,000 BTUs of energy and that a brilliant engineer has created an 80 percent efficient solar cell. Find the area (in square smoots and in square feet) that an
They each completely penetrate a homogeneous, confined aquifer, and pump at exactly the same rate, 5m^3/day. Prior to pumping, the piezometric head was 30m, the same as the thickness of the aquifer.
Using the tables in the AISC manual, make a preliminary selection of member size, using a HSS shape. Do not simple state a choice - state your logic step by step, quoting page numbers (AISC) for eac
A PVC pipe has an inside diameter of 40 mm, is 30 m long and carries 10°C water at a rate of 3.5 m3/hr. At this rate, the friction factor of the pipe is 0.0814.
a .65% Carbon hypoeutectoid plain carbon steel is slowly cooled from 950 degrees C to just slighty above 723 degrees C calculate the weight percent austenite and weight proeutectoid ferrite in this
Assume the section has cracked and use the transformed area method to compute their flexural stresses for the load. Given: Beam 30 ft long with uniform load of 2 k/ft and a point load of 30 k at 10
John Adams has a $65,000 adjustable gross income from Apple Corp. and allowable itemized deductions of $7200. Mary Eve has a $75,000 adjustable gross income and $2000 of allowable itemized deduction
a mild steel component in a form of a finite slab with a thickness of 2L=2.5 mm is to be hardened by packing it in a carbonaceous material in a furnace for a predetermined time. the uniform initial
The divers work at a depth of 15 m and the seawater density is 1027 kg m-3. They are known to consume 130 litres of air at the ambient temperature is 10oC over the time taken to do the job.
A tank with a volume of 5,000 gal contains salt solution at an initial concentration (C0*) of 70,000 mg/L, but the concentration in the tank (C) needs to be reduced to 500 mg/L. Two approaches are b
The viscosity of a fluid can be measured in an experiment by dropping a small ball into a calibrated tube containing the fluid and observing the random variable X, the time it takes for the ball to
The compressive strength of concrete has a (population) mean of 2500 psi and a (population) standard deviation of 50 psi. Find the probability that a random sample of n= 5 specimens will have a samp