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The motion of the outer frame B is given by xB = b sin ωt. For what range of the driving frequency ω is the amplitude of the motion of the mass m relative to the frame less than 2b?
An 180 m long 100 mm diameter compressed air pipeline is to be run from a stationary compressor to an air-track drill which requires a flow of 780 l/sec. The pipeline contains 2 large radius bends (R=2d) ,and 4 half closed gate valves.
A contractor brought 10,000 cubic yard of soil to site to create a ramp. The water content of the soil is 30%. According to the engineer, the soil is too wet, and should be dried to 20% water content before it can be placed and compacted. The contrac..
Determine the flow depth, velocity and Froude number after the jump, the head loss associated with jump, the energy dissipation ratio, and the wasted power production potential due to the hydraulic jump.
Determine the critical load of a steel tube that is 5 m long and has a 100-mm outer diameter and a 16-mm wall thickness. Use E = 200 GPa.
When using the rectangular surveying system, under what circumstances is there an exception to the general law that an identified original section corner controls the positions of the boundary lines meeting at or passing through the corner ?
A cube of moist soil weighs 330 lb and has a volume of 3.00 ft3. Its moisture content is 27.0% and the specific gravity of solids is 2.72. Compute the void ratio, porosity, degree of saturation, unit weight and dry unit weight of this soil.
Find the present worth of a series of investments that starts at $1000 in year 1 and increases by 12% per year for 20 years. Assume the interest rate is 12% per year.
An HSS 10×6×5?16 with Fy = 46 ksi is used as a column. The length is 16 feet. Both ends are pinned, and there is support against weak axis buckling at a point 6 feet from the top. Determine the design strength for LRFD.
A developer has requested permission to build a large retail store at a location adjacent to the intersection of an undivided four-lane major road and a two-lane minor road.
a 2000-mw electric generating station burns 278 tonnes of residual fuel oil per hour. the fuel contains 2.6 s and 1.2
Discuss whether shoe A (leather) or shoe B (synthetic) is better for the environment based on the data in the table below. Is it possible to weight one aspect (air, water, land pollution or solid waste) as being more important than anothe
An activated sludge tank, 30 x 30 x 200 ft, is designed as a plug-flow reactor, with an influent BOD of 200 mg/L and a flow rate of 1 million gallons per day. a. If BOD removal is first-order reaction, and the rate constant is 2.5 days^-1, what is ..
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