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The critical buckling length for a column under its own weight, with mass density , area A, and moment of inertia I, is given by the formula
Say this buckling mode limits the weight of collars that can be stacked on a drill bit in a drill string. Determine the maximum force that the weight of stacked collars can exert on a drill bit, without the string of collars buckling. Take the steel collars to have an outer diameter of 7 in. and an inner diameter of 2.81 in.
A piston-cylinder assembly containing 1/4 kg of a gas undergoes a constant pressure process at 5 bar beginning with a specific volume of 20 m^3/kg. for the gas in the system the work is -15 kj. determine the final volume of the gas in m^3
A tidal channel, which may be assumed to be rectangular, is 40 m wide and conveys a discharge of 60 m3/s at a depth of 1.52 m. A tidal bore is seen to propagate upstream with a wave speed of 5 m/s.
At the end of 15 years, the first motor will have a salvage value of $50 and the second motor will have a salvage value of $100. consider the MARR to be 8%. (note : 1HP=0.7457 kw). Determine which motor should be installed based on the PW criterio..
What is the difference between lump sum and cost plus a fee compensation? What is fast track construction, and what types of contracts and fee compensation is it mostly commonly associated with?
Compare the reactor volume required to achieve 95% efficiency for Completely Mixed Flow Reactor (CMFR) and a Plug Flow Reactor (PFR) for the following conditions. steady-state, first-order reaction, flow rate = 14m3 / day.
The column is braced. The column is required to carry N*=0.75phiNuo kN. What is the value of M2* that could be carried by column considering the slenderness effect. M1*= 0.8M2* Nuo=1000kN r=120mm
A 50,000 L/day stream of wastewater must be heated from 15 degrees celsius to 40 degrees celsius for a treatment process to work properly. at what rate must we put heat into the stream? assume that wastewater has thermal properties exactly like pure ..
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, and bending moments at the tree critical points
If the static port of an aircraft became blocked during a climb the vertical speed indicator would: 1.Remain at the previously indicated rate of climb 2.Fall to zero rate of climb indication 3.Indicate a maximum rate of climb 4.Indicate a maximum rat..
The U.S. Department of Energy (DOE) constructed a Darrieus vertical-axis wind turbine in Sandia, New Mexico. The machine is 60.0-ft tall and 30.0-ft in diameter, and swept an area of 1200 ft 2.
In accordance with BCA, what are the assessment methods and how may they be used to determine that a building solution complies with the performance requirements
task - 1i- describe how test flumes and associated equipment are used to assess and confirm hydraulic behaviour in open
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