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A concrete cylinder of height 8 inches and diameter of 4 inches was tested in the lab. The maximum compressive force was found to be 150,000 lbs and a tensile force of 25000 lbs.
1. Calculate the compressive strength of the concrete
2. Calculate the tensile strength of the concrete
As the piston is compressed, the pressure also increases by 2000000 Pa. If there is 4 times as many atoms of nitrogen as helium, how many moles of helium are in the cylinder?
For a mixed liquor volatile suspended solids (MLVSS) of 1800 mg/L, what is the total return solids flow rate?
A cylinder with a moveable piston holds .20 lb of hydrogen initially in a volume of 1 cu ft at a tem-perature of 1300 F. Then the volume is expanded to 2.5 cu ft while the gas pressure remains constant.
At an axial load of 23 kN, a 40-mm-wide by 10-mm-thick polyimide polymer bar elongates 2.7 mm while the bar width contracts 0.17 mm. The bar is 240 mm long. At the 23-kN load, the stress in the polymer bar is less than its proportional limit.
the flow rate is 600 cfs. for a long distance upstream the bottom slope is 2.5%. the bottom slop of the channel abruptly changes to 0.6% and continues at that slope for a long distance determine the location of the hydraulic jump.
Air flows steadily between two sections in a long, straight portion of 4 in. inside diameter pipe (D1=D2). The uniformly distributed temperature and pressure at each section are p1=100psia, p2=18.4psia, T1=540 R and T2=453 R.
two steel spheres 100mm in diameter. Compute gravitational force and the force of mutual attraction F in newtons. the specific weight of steel is 0.284 lb/in^3
The aquifer is inhomogeneous with K = 12+0.006x, where x =0 at point 1, and the piezometric heads at point 1 and 2 are 14.2 m and 18.8 m, respectively measured above the upper confining layer.
if the settling velocity of a particle is 2.8 mm/s and the overflow rate of an upflow clarifier is .56 cm/s what percent of the particles are retained in the clarifier
The minimum safe side slope for an excavation in a certain type of soil is 3 horizontal to 1 vertical. If a foundation excavation must be 40 ft wide x 60 ft long x 20 ft deep, How much soil must be removed from the site
A PVC pipe with a diameter of 30 inches will carry a flow of 20 cfs. the bottom slope is 0.005 and the roughness coefficient is 0.015. determine the normal depth, critical depth, velocity and the froude number.
a) What flow rate (m 3/s) does the filter handle during production? b) What volume of water is needed for backwashing plus rising the filter in each filter cycle?
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