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1.In a hydrometer test , the results are as follows:Gs =2.60 , temperature of water=24c ,and R=43at 60 min after the start of sedimentation (see figure 2.24 ) . what is the diameter , D, of the smallest -size particles that have settled beyond the zone of measurement at that time(that is , t=60 min)?
2.If aerosol particles were considered to be extremely large gas molecules, what would the gram molecular weight of a gas of 1.0 micron diameter particles having a density of 1000 kg/cubic meter.
A rectangular blade weighing 0.02 lbf is kept in the surface of water (sigma=0.073 N/m) solely by surface tension forces. What is the minimum perimeter of that the blade must have so that this is possible
Estimated rolling resistance factor the haul road is 3000 lb/ton. If the scraper weighs 35,000 lb (empty) and carries 25 loose cubic yards per trip. What is the rolling resistance of the loaded unit?
A fellow I know wanted to know the coefficient of friction between steel and commercial carpet. The value was not in the tables of any textbook he had, so he devised an experiment.
A copper wire breaks under an engineering stress of 43x10^3 psi. Its ductility is 77%it reduction area. Calculate the true stress (in psi) for fracture in the neck region.
establish a grass cover over a 10ha landfill. the root zone of the grass is 40cm deep. increase the volumetric water
Water at 20 °C is transported through a 200 m long wrought iron pipe with a head loss of 9.8 m. Determine the diameter of the pipe required to convey 10L/sec.
A rectangular channel carries discharge of 10 m^2/s per unit width, with a sluice gate. Calculate the flow depth y3, if a hydraulic jump forms downstream of the sluice gate when y1 = 20 m.
A 1000 ft long steel pipe carries water from a reservoir with a water elevation at 826 ft. The pipe has a diameter of 12 in. with a wall thickness of .5 in. A gate valve at the downstream end is slowly closed during a half-mintue period
A very long rectangular channel connects two reservoirs and has a longitudinal slope of 0.005. The channel has a width of 10 m and a Manning’s n of 0.030.
specific issues that are important to create code of ethics and professional
A rectangular concrete channel (n=0.015, S_o = 0.005) has a bottom width of 6.0 m and a discharge rate of 25 m^3/s. 1) Compute the normal depth y_n 2) Compute the critical depth y_c 3) Compute the minimum specific energy E_min
Plan 2 has a $40/month access fee, unlimited nights and weekends, 750 anytime minutes plus $0.29/minute for minutes over 750, text messages cost $0.05 each, and roaming cost $0.39/minute whenever she leaves the state.
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