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An object is submerged in a water tank and tethered by a line to the bottom of the tank. If the object has a density of 45 kg/cubic meter and a volume of 2.5 cubic meters, what is the tension in the line?
If the initial concentration of parathion in the runoff from the agricultural field is 3 ppb, the velocity of the river is 2.3 miles/day, how many days will the fish hatchery have to contain river water in holding tanks until the parathion concent..
it has been calculated that the maximum density for the soil will be obtained when the water content reaches 21.5%. Compute how many grams of water must be added to each 1000g of soil( in its natural state) in order to increase the water content 2..
For energy conservation, materials with a high thermal capacity are effective in climates in which the heat flow through the building envelope is:
A worker ties a rope oflength 12 m to he tower at A and exerts a constant force of 160 Non the rope. (a) Express the tension in each cable as a function oftheta knowing that the resultant of the tension in the cables andthe rope is directed downwa..
A rear-wheel-drive 3000lb drag race car has a 200-inch wheel base and a center of gravity 20 inches above the pavement and 140 inches behind the front axle. The owners wish to achieve an initial acceleration from rest of 15 ft/s on a level paved s..
The 800 mm diameter shaft is made of A-36 steel. If it is subjected to the uniform distributed torque of 5kN*m/m, determine the angle of twist of end A with respect to B.
An undisturbed soil sample was collected in a sampling tube of internal diameter 5cm. The length of the extracted sample was 10.2 cm and its mass was 360 g. After oven drying the mass reduced to 326.5 g.
The selection of the runway for a given day is based on wind at the beginning of the day, and once selected will not be changed for the entire day. The airport has a single peak period each day; this is the hour between 4:00 and 5:00pm.
Specify a device describing briefly its principle of operation, that is typically installed downstream of a bursting disc as an indicator of disc rupture,
What are the major policy aspects of the Clean Water Act? What is the history and statutory basis for federal regulation of wetlands? What are the national permits? What are the origin and significance of the no net loss policy?
Refrigerant 22 is used in the evaporator pipe of a commercial refrigeration unit. At steady state it flows at a rate of 0.5 kg/s through the pipe of constant diameter. It enters the pipe at -10C with a velocity of 5 m/s and a quality of 25%.
A tank with a volume of 5,000 gal contains salt solution at an initial concentration (C0*) of 70,000 mg/L, but the concentration in the tank (C) needs to be reduced to 500 mg/L. Two approaches are being considered
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