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Contain at least one two-force member. Solve by utilizing the two-force principle, where appropriate. If the weight of a body is not specifically stated, it can be neglected. The automatic drilling robot must sustain a thrust of 38 lb at the tip of the drill bit. Determine the couple CA that must be developed by the electric motor to resist this thrust.
A trapezoidal channel having bottom width of 8 m and side slopes of 1 : 1, carries a discharge of 80 m^3/s. Find the conjugate depth to an initial flow depth of 0.75 m before the jump. Also determine the energy loss in the hydraulic jump.
The compound interest formula is F=P(1+i)n where F is the total amount due, P is the initial cost or amount of money, i is the interest rate, and n is the number of periods interest is computed. 1.A student purchases a $1400 laptop computer for sc..
It has been estimated that the emission of NOx from a coal fired power plant is 1300 g/s. At 100 km downwind (y=10m), what is the concentration of NOx in g/m^3. The wind speed at the top of the stack with a height of 100m is 6.5 m/s and an inversion ..
Plot the following void ratio versus pressure data, and evaluate the compression index and the recompression index. Determine the preconsolidation stress.
What is the cost breakdown structure(CBS)? What are its purposes? What is included (or excluded)? How does it relate to a work breakdown structure (WBS)?
The concentration of cadmium ion (Cd^+2) in water is 225 mg/L. Will a precipiate be consumed or produced at pH 9.0? Will a precipitate be consumed or produced at pH 7.5
The fermenter stream you saw for the last problem is to be separated by distillation as shown below. Its composition is 85.0 mol % water (H2O, MW = 18.01), 10.0 mole % ethanol (C2H5OH, MW = 46.07), and 5.0 mol % sucrose
Saturated liquid water at 1.0 MPa is throttled adiabatically to a pressure of 0.4 MPa. If the change is kinetic energy is negligible, what percentage of the water evaporates during this throttling process?
Characteristic values of the shear strength parameters of the soil are c'= 0, and f' = 400. Determine the required width of the footing if a factor of safety of 3.0 against shear failure is specified when the water table rise to foundation level.
a spherical pressure vessel has an outer diameter of 10 ft and a wall thickness of 0.5 in. knowing that for the steel used ?all= 12 ski, E= 29 x 10^6 psi, and v= 0.29, determine (a) the allowable gage pressure,
When the 100-lb block is at h = 3 ft above the cylindrical post and spring assembly, it has a speed of v = 20 ft/s. If the post is made of 2014-T6 aluminum and has a diameter of d = 2 in., determine the required minimum stiffness k of the spring s..
For the beam shown be low, derive the equation of motion in the ∞- and y-directions. Recall that the deformation of a bar along its axis
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