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The solubility of nitrogen gas in rubber at 25°C is 0.00156 kmol/m3 · bar. When phase equilibrium is established, the density of nitrogen in a rubber piece placed in a nitrogen gas chamber at 800 kPa is
(a) 0.012 kg/m3
(b) 0.35 kg/m3
(c) 0.42 kg/m3
(d) 0.56 kg/m3
(e) 0.078 kg/m
A hurricane has an average rainfall depth of 9in over a 200-mi^2 watershed. What is the size of the reservoir needed to contain 20% of the rain completely.
The coefficient of rolling resistance can be taken to be a constant for all speeds, equal to 0.008. If the cyclist is coasting down a 6% grade, what is the maximum speed attained
Water under a gage pressure of 350kPa flows with a velocity of 5 m/s through a right-angled bend that has a uniform diameter of 250 mm
The foof of the culvert will be located 3 m below ground surface. Currently the groundwater level is at ground surface. But, after installation of the culvert, the groundwater level is expected to drop 2 m below ground surface.
The car's position is defined by the position vector, where . The image below shows the system projected onto the x-y plane. What are the car's velocity and acceleration vectors at this position
1 discuss the different agencies institutes centers and other national bodies that are involved in environmental work
A tire carries a 5,000-lb load and has a pressure of 100 psi. The pavement has a modulus of elasticity of 43,500 psi. A deflection of 0.016 inches is observed at a point on the pavement surface 0.8 inches away from the tire load.
A company facing an interest rate of 8% must choose among projects offering the following four-year cash flows. If the company is employing the net present value criterion, which project should they choose
In a large university computing center, on average there are 10 service calls per day. A computer technician can handle on average 5 service calls per day. The cost of adding a technician
Air enters the compressor of an ideal gas refrigeration cycle at 12°C and 50 kPa and the turbine at 47°C and 250 kPa. The mass flow rate of air through the cycle is 0.08 kg/s.
Using the following assumptions, determine the solids retentiontime, the cell wastage flow rate, and the return sludge flow ratefor the Jambalaya shrimp processing plant WWTP.
The divers work at a depth of 15 m and the seawater density is 1027 kg m-3. They are known to consume 130 litres of air at the ambient temperature is 10oC over the time taken to do the job.
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