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A column is formed by nailing together three wood boards, each of which has a width to depth ratio of 1 to 4. Cross-sections of two arrangements (a) and (b) of the boards are shown. Determine the ratio of the critical buckling load for arrangement
(a) to the critical buckling load for arrangement
(b) Consider buckling in either plane for both arrangements.
A 45 kg machine is placed at the end of a 1.6 m long cantilever beam of elastic modulus 200 x 109 N/m and cross-sectional moment of inertia 1.6 x 10-5 m4.
If the brakes are applied uniformly for 5 sec to bring the rig to a stop from a speed of 20 mph while moving down a 10 percent grade, determine the force P in the coupling between the trailer and the truck. The truck weighs 20,000 lbf and the trai..
What is the percent removal of two particles with settling velocity of 0.001 and 0.002 m/s in the sedimentation basin is the basin is (i) a rectangular tank and (ii) an up flow clarifier?
Your other assistant is measuring the propane (C3H8) concentrations, which are 75 microM at 200 m downstream and 52 microM at 1500 m downstream. What is the reaeration coefficient if it is assumed that no dilution occurred due to lateral flow?
If e is some value at midspan and e=0 at each end of the beam, and the cable within the beam has a parabolic profile. what is the expression I need to use to determine e at some other lenth along the beam
Two long pipes convey water between two reservoirs whose water surfaces are at different elevations. One pipe has a diameter twice that of the other; both pipes have the same length and the same value of f.
A pin-connected truss is loaded and supported as shown. Each aluminum member has a cross-sectional area of A = 2.6 in.2. Assume a = 4.75 ft and b = 5.70 ft. If the normal stress in each member must not exceed 60 ksi, determine the maximum load Pma..
Let the noise variance be N0/2 per dimension. Describe a ML detector on this set of M signals.
Three horizontal angles were observed around the horizon of station A. Their values are 165°07'54", 160°25'36", and 34°26'36". Assuming equal weighting, what are the most probable values for the three angles?
Consider the two-dimensional steady flow where the velocity field is given by V=Vo/L(-xi+yj) . Determine the streamlines for this flow. Plot streamlines for x> or =0
Determine the uniform grade needed, and calculate invert elevations at each 50-ft station.
An in-compressible fluid flows horizontally in the x-y plane with a velocity given by u = 33 (y/h)^1/2 , where y and h are in meters and h is a constant. Determine the average velocity for the portion of the flow between y = 0 and y =h.
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