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A high-speed boat is powered by a water jet pump engine, similar to a jet engine on airplanes. The engine takes in water at the bow through a tube with diameter 1 ft, and the water is pumped out the stern of the boat through a 3-in diameter tube. The flow rate is 5000 gpm. Neglecting any frictional loss, find: (a) the thrust force of the engine; (b) the maximum speed of the boat, if the drag coefficient is 0.005 with a corresponding projected area of 500 ft2; (c) If the pump is 100% efficient, how many hp are required?
Calculate the force of attraction between a K+ cation and a O2- anion, the centers of which are separated by a distance of 1.5 nm.
a continuous beam abc is fully restrained at point a and restrained at point c in all senses except that it may move in
two kilograms of air within a piston-cylinder assembly execute an ideal carnot power cycle within maximum and minimum
Calculate the theoretical density of FCC Copper, which has an atomic radius of 0.128 nm and the atomic weight of 63.55 g/mol.
A small vapor-compression refrigeration unit is to be built into a recreational vehicle and is designed to operate on a 12-volt electrical system. The refrigerator has a cooling capacity of 500 W and uses R-134a. The refrigerant enters the compressor..
Water flows from the bottom of a large tank where the pressure is 120 psia to a turbine located 65 ft below the bottom of the tank that produces 40 hp. The pressure at the turbine exit is 42 psia and the water velocity is 36 ft/sec. The flow rate of ..
do you think the objects created in the following representation schema are always valid? justify your answers with
suppose that your business is operating at the threesigma quality level. if projects have an average improvement rate
question 1 give examples from your own experience of situations where friction is a desirable and b
Water flows at a rate of 20 l/s through a horz pipe dia .03 m. The pressure drop across the valve in the pipe is measured to be 2 kPa. Determine the irreversible head loss of the valve, and the useful pumping power needed to overcome the resulting..
one kilogram of air as an ideal gas executes a carnot power cycle having a thermal efficiency 50. the heat transfer to
calculate the energy efficiency of a continuous glass melter that uses room temperature air for burning methane gas.
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