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1. The Hubert H. Humphrey Metrodome in Minneapolis opened in 1982 at a cost of $55 million. To prepare for the footings, et cetera, 3.00x105 cubic yards of dirt were removed. The Metrodome's inflatable roof covers 10.0 acres and its interior volume is 60.0x103 cubic feet. During construction, 40.0x103 cubic yards of concrete, 11.9x103 tons of reinforcing steel, and 5.00x102 tons of structural steel were utilized. The roof material includes an outer layer of Teflon-coated glass and an inner layer of woven fiberglass. Given this information, answer the following: If removed evenly over the 10.0 acres, how deep a hole would be formed as a result of the excavation? yards If the two-layer fiberglass roofing material has a mass of 0.667 lbm/ft2, what is the total mass of the roof? lbm If 10.0 inches of wet snow collected on the roof (this happened in 1982), what is the added mass on the roof? (Assume 1 inch of water equals 10 inches of snow).
2. A waterbed mattress has the following dimensions: 210 cm X 160 cm X 27 cm. The density of water is 62.4lb/ft3. What is the weight of the bed in pounds? lb If the mattress is placed on the floor (no bed frame), how much pressure does it exert on the floor in pounds per square inch?
Suppose that a person who boards the elevator on the ground floor gets off on the fifth floor. Assuming that the elevator has achieved operating speed by the time it reaches the second floor and that it is still moving at its operating speed as it..
A signal approach has 20 seconds of displayed green, 4 seconds of yellow, and 3 seconds of all red (assume typical start-up, lost time, and clearance time). The cycle length is 60 seconds.
0.1 moles of an ideal gas contained in a piston-cylinder assembly undergoes the heat pump cycle shown below. The cycle operates counter-clockwise. Evaluate the coefficient of performance.
Three point loads 10,000, 7500 and 9000 kN act in line 5m apart near the surface of a soil mass. Calculate the vertical stress at a depth of 4m vertically below the centre (7500kN) load.
An undisturbed soil sample has a total unit weight of 19.4 kN/m3, a dry unit weight of 16.9 kN/m3, and a specific gravity of soil solids (Gs) of 2.69. If the sample could be saturated without changing its porosity, calculate the amount of water (i..
The probability is 1% that an electrical connector that is kept dry fails during the warranty period of a portable computer. If the connector is ever wet, the probability of a failure during the warranty period is 5%.
The volume of the bend is 0.1 m3. The steel of the bend material weighs 51 kg. Neglecting friction or other losses in the pipe, what is the tension force in the bolts holding the bend in place
The water enters at 1 atm at 10 C and the flow rate through the turbine is 40 m3/s. The water is discharged from the turbine 200 m below the intake at 1 atm and the temperature of the water at the discharge is 10.2 C.
a 30-acre field received 4 inches of rain with 35% runoff.Determine the volume of water infiltrated on the field ( assume all the water that doesn't runoff infiltrates )
Two smooth circular cylinders of weight w=500N and radius r=200mm are connected at their centres by a string AB of length 600mm and rest upon a horizontal plane.
Given that uniform flow is subcrital and there is a weir in a rectangular channel, how do you determine what the weir height should be to force the flow to be critical. Draw this transition on a specific energy curve.
A measurement was recorded as 171.278 m with a 30-m tape that was only 29.996 m under standard conditions. What is the corrected measurement?
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