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The compound bar carries the axial forces P and 2P. Find the maximum allowable value of P if the working stresses are 40 ksi for steel and 20 ksi for aluminum, and the total elongation of the bar is
A constant-head test was conducted on a sample of soil 15cm long and 60 cm^2 in cross-sectional area. The quantiities of water collected was 50 cm^3 in 20 seconds undera a head difference of 24 cm.
In a constant-head permeability test a sample of soil12 cm long and 6 cm in diameter discharged at 1.5*10^-3 of water in 10 minutes. The head difference in two piezometers A and B located at 1 cm an
A gravity thickener receives 33.000 Lpd of wastewater sludge and increases the solids content from 3.0% to 7.0% with 90% solids recovery. Calculate the volume of thickened sludge.
how to use the bisection method on the van der waals equation Problem 1 (15 Points) The van der Waals equation gives a relationship between the pressure P (in atm.), volume V (in L), and temperature
The flow of water over a weir, can be computed by Q=5.35LH^(3/2), where Q is the volume low rate of water in cubic feet per second, L is the length of weir in feet, and H is the height of water over
the velocity varies linearly with time throughout the nozzle. the velocity at the base is 1t and at the tip is 4t. what is the local acceleration midway along the nozzle when t=2s
Choose a pipe to be used as a tension member to resist a service dead load of 10 kips and a service live load of 25 kips. The ends will be connected by welding completely around the circumference of
An 8-inch water main with a flow rate of 14 ft3/sec raises 100-feet. At the beginning of the main the pressure is 110 psig and drops to 50-psig at the end. For this water main calculate the head los
Determine the mass of the earth knowing that the mean radius of the moons orbit about the earth is 238.910mi and that the moon requires 27.32 days to complete one full revolution about the earth
Write one to two paragraphs on each topic below, and describe how it applies to the realm of data communication. Also discuss what type of damage these computer infections can do to data in a comput
ITIL stands for the Information Technology Infrastructure Library. ITIL is the international de facto management framework describing "good practices" for IT Service Management.
Neglecting the mass of the pulley and the effect of friction in the pulley and between block A and the horizontal surface. Determine (a) the initial tension in the table (b) the initial acceleration
an uncontrolled mosaic is required for an environment project using 1/30000 photos. only the central area of each photo is used for the mosaic- an area about the center measuring 4.5x4.5 inches
A reservoir cover is 12,000 acres and is 20 feet thick. The formation has initial porosity of 0.25. The pore volume compressibility of the reservoir rock is 3.0 x 10^(-6) psi^(-1) .
Essentials of Soil Mechanics and Foundations 7th Edition David McCarthy An oil storage tank 50 ft in diameter imposes a maximum loading of 2500 psf onto the ground surface where the tank is supporte
An open system Brayton cycle is used in a power plant. The atmospheric inlet conditions of the compressor are: temperature 30C and pressure 100kPa and the pressure at its outlet is 1200kPa.
An open system Brayton cycle has a heat input of 500 kW. The pressure ratio of is 15 and the mass flow rate of air through the engine is 1 kg/s. Right before compression the temperature of the air i
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 del
A natural channel that is clean and irregular(n= 0.040) has a bottom width of 15 ft m, side slopes of 6:1 (H:V) and a bottom slope of 0.0002. Using Manning's equation, determine the normal depth in
If you have 10 kips acting downward on a foundation and footing, 4 feet long, with uniformly distributed load acting up ward of 2.5 k/ft (soil) also 4 ft long. what are the reactions, shear forces,
The cost of running this fleet is $325/hr per truck. For a given contract, a total of 2,500 tons must be removed from one construction site and moved to another location 35 miles away.
an embarkment will be constructed with the soil compacted to 95 percent of the max dry density. the borrow material, is deposited at a uniform density of 75 percent of the max dry density. the roadw
The Big Bear town council has asked that you determine whether the discharge of the town's wastewater into the Salmon River will reduce the DO below the state standard of 5.00 mg/L at Little Bear, 5
A 20 kg box is on an upward inclined surface of 30 degrees from the floor. the velocity of the box is zero when it is subjected to a constant horizontal force F=30N. assuming the surface is smooth,