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Consider a submarine cruising at 0.18 m/s far below the surface in sea water at 20 degree C. A 1:50-scale model of the submarine is to be tested in a towing tank. The tests are performed in fresh water at 20 degree C. At what speed should the model be towed to ensure dynamic similarity? What must the drag of the model be multiplied by to give teh drag of the full-scale submarine?
methane is preheated to 80 c degree and is burned in 20 percent excess air that is preheated 200 c degree in a
a gas is contained in a vertical fractionless- cylinder device. the piston has a mass of 4 kg and cross sectional area
A water cooled compressor with air flowing at 0.1 kg/s enters at a temperature of 27*C. The compressor work is 5 kW and the heat transfer rate to the water is 2 kW. Use air as an ideal gas (Cp = 1.006 kJ/kg-K). Ignore changes in KE and PE.
an industrial water shutoff valve is designed to operate with 40lbs of force and will encounter 150lbs of resistance
8.80 times 105 gallons of tar sg 1.20 is stored in a 29.0-ft tall storage tank. what is the total mass of the liquid
for the following electrochemical cell pt1 o2 g 1 atmh cl- 0.05mh cl - 1.00 mo2g 1 atmpt2a calculate the cell
white wolf a rocket is launched straight upward. at the end of the powered portion of the flight the altitude of the
Water is pumped from a lake at ambient pressure and temperature to an elevation of 15 m through a pipe of 2-cm diameter galvanized iron at a flow rate of 0.00366 m3 /s. Assume the discharge is to open atmosphere. The pipe is 70 m long and has 2- 90o ..
a pressure measurement system has the following specifications range 0 to 1 kpa linearity error 0.05 fso hysteresis
find the isentropic and the second law efficiencies for a turbine. it receives steam at 3000 kpa 500c and has two exit
argon enters an insulated nozzle at 277 kpa 1300 k 10 ms and exits at 100 kpa 645 ms. for steady-state operation
given temperature of the hot loop tin36.70c tout73.738c hot flow 2.985 galmin temperatures of the cold loop tin 14.42c
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