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Some students want to visualize flow over a spinning baseball. Their fluids laboratory has a nice water tunnel into which they can inject multicolored dye streaklines, so they decide to test a spinning baseball in the water tunnel (Fig. P7-44). Similarity requires that they match both the Reynolds number and the Strouhal number between their model test and the actual baseball that moves through the air at 80 mi/h and spins at 300 rpm. Both the air and the water are at 20°C. At what speed should they run the water in the water tunnel, and at what rpm should they spin their
steam expands in a turbine steadily at a rate of 25000 kgh entering at 6 mpa and 450? and leaving at 20 kpa as
The inlet and outlet air temperature of a centrifugal flow compressor are 70oF and 120oF respectively (See Figure 1). The air flow steadily at a mass flow rate of 24 lbm/min. If the compressor is adiabatic, determine the rate of work at which the air..
natural gas consists of a mixture of several gases. one example is 84 percent methane 14.8 percent ethane .70 percent
A motorist enters a freeway at 36 kph and accelerates uniformly to 90 kph. From the odometer in the car, the motorist knows that she traveled 0.20 km while accelerating. Determine a.) the acceleration of the car, b.) the time required to reach 90 ..
Design a logic circuit that takes a 4-bit Gray code input from an optical encoder and translates it into two 4-bit nibbles of BCD. Design a logic circuit that takes a 4-bit Gray code input from an optical encoder and determines if the input value..
Why is it convenient to handle binary numbers in the hexadecimal form? Write the hex values of the six numbers given above.
the inlet to a boiler of a carnot power cycle is at 5 mpa saturated liquid and the exit is saturated vapor. the
steam at a rate of 5 lbms enters an adiabatic turbine at 800 psia 1000 f and leaves at an actual condition of 10 psia
a bowling ball has the mass m the radius r and the radius of gyration kg. the ball is rolling on a straight lane with
How would you calculate the sensible heat, the latent heat, and determine the latent heat of vaporization of the water vapor in this air stream as the air is cooled from 170 F to 48 F?
Water (at 15 C) flows out of a nozzle that is attached to a garden hose. The volume flow rate is through this nozzle at a rate of 25 x 10-5 m3/s, which discharges into the atmosphere. The diameter of the garden hose is 1.5 cm, while the diameter of t..
a steel mill has a production set up where metal sheets are rolled for desired thickness as they emerge from the
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