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A wastewater treatment plant produces 400 m3/d of biosolids in liquid form, containing 2.5% TSS. The specific gravity of the biosolids is 1.02. A centrifuge is used to produce 27% solids cake having a specific gravity of 1.10. If the centrifuge captures 85% of the biosolids in the centrifuge feed, how many m3/d of cake are produced?
Design a series of closely spaced parallel box beams that will support an asphalt road surface over a 10 foot wide, 40 foot long span. The hollow box beams are made of concurred and imbedded No. 8 steel rods (1 inch dia.).
assuming that the velocity variation within the main channel and the floodplain subsections is much smaller than the change in mean velocities between subsections, find the value of the kinetic energy correction coefficient.
Calculate the natural frequency and sketch the tr mode shape (reasonably to scale) for the beam shown - Discuss or calculate the relative contribution to the total deflection at point
A clean-earth trapezoidal channel with a bottom width of 1.8 m and a side surface slope 1:1 is to drain water uniformly at a rate of 8 m^3/s to a distance ok 1 km. If the flow depth is not to exceed 1.2 m,
Define the meaningof C•t product. In addition to Cand t, what factors influence the rate of chemical disinfection? What kind of microorganism is most readily inactivated byfree chlorine? What kind is most difficultto inactivate?
A 9 gram bullet is fired horizontally at a tree and is brought to a halt right before it exits the tree. the tree is 90cm thick and exerts a resistive force of 16000N on the bullet as it travels through the tree
Assume the stream is 3ft wide and 1ft deep (assume a rectangular cross section. If the flow throught the stream is 1000 gallons/day and the concentration at the beginning of the stream is 250 ppm
If the car passes point A with a speed of 20m/s and begins to increase its speed at a constant rate of At=0.5m/s^2, determine the magnitude of the car's acceleration when s=100m and x=0.
the trailer has a mass of 580 kg and a mass center at g. the spool has a mass of 200 kg with a mass center at o and a
A ball is thrown with an upward velocity of 5m/s from the top of a 10-m high building. One second later another ball is thrown vertically from the ground with a velocity of 10m/s. Determine the height from the ground where the two balls pass eachothe..
Sandwhich structures are obviously very efficient in bending applications. Would they be equally efficient in tensile or compressive loading? Explain your answer in terms of area available for carrying tensile-compressive loads.
the triangular plate ABC is supported by ball and socket joints at B and D and is held in the position shown by cables AE and CF. If the force exerted by cable AE at A is 1000N , determine the moment of the force about line joining points D and B.
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