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In a given year, a 10,000 mi2 watershed received 20 inof precipitation. The average rate of flow in the river drainingthe area was found to be 6000 cfs, while groundwater andinfiltration losses over the period were estimated to be 0.6inches. Determine the combined amounts of water evaporated andtranspired from the region during the year of record. Report answerin inches.
The phone lines to an airline reservation system are occupied 40% of the time. assume that the events that the lines are occupied on successive calls are independent. assume that 20 calls are placed to the airline.
The soil undergoes shear failure and reaches critical state on this plane when the pore-water pressure is increased to 120 kPa while keeping the total normal and shear stresses constant.
If D1 = 60 cm, D2, = 40 cm, D3 = 54 cm, L1 = 400 m, L2 = 450 m, and L3 = 750 m. Assume f = 0.0125 (3 riveted steel pipes). Determine the total flow if the system head loss is 60 m.
Two identical alloy specimens are being evaluated for use in a new fuel rod design. One sample was exposed to a fast neutron flux of 9 X 10^23 neutrons/(cm2*sec) at a temperature of 323°K for six weeks in a test reactor.
The beam is designed tohold a 10kN heating unit at mid span. There are no other loads onthe beam. Using G40.21 350W steel, select the lightest W shapes forthe beam.
The power, P, required by an agitator in a tank is a function of the following variables, diameter of the agitator, D, Frequency of the impeller rotation, w (1/s), Viscosity of liquid, u (lbss/ft^2) and the density of the liquid ,p (slugs/ft^3)
The flow is designed using a rectangular coordinate system whose orgin is at the free surface midway between the walls. The x axis is normal to the walls, and the y axis points vertically downward.
Determine D10, D30, and D60Effective grain size c. Cu d. Cz Sieve Number Opening (mm) Mass of soil retained (g) No. 4 4.750 28 No. 10 2.000 42 No. 20 0.850 48 No. 40 0.425 128 No. 60 0.250 221 No. 100 0.150 86 No. 200 0.075 40 Pan 24
A stopwatch was started when h was 501 mm and read 17.6 seconds when h was 244 mm; the test was repeated for a drop from 254 mm to 97 mm and the time was 22.4 seconds.
A clay ball (m=0.82 kg) is thrown at a metal target (M=1.72 kg) that is suspended from a cable. The ball is released 1.5 m above teh ground at an angle of 32 degrees.
Knowing that each member has a 2 3 4-in. rectangular cross section and that each pin has a 12 -in. diameter, determine the maximum value of the average normal stress (a) in member BE, (b) in member CF.
If the aircraft flies at 9000 m standard altitude, make a plot of drag (in N) versus speed (from stall to 240 m/s) and determine the optimum emise velocity (minimum drag per unit speed).
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