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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
a 356 mm diameter main services a section of a mine and carries 4.8 kgs of compressed air at peak periods. if the main
Cinnamic aldehyde ( a fragrance compound) can be made by base catalysed aldol condensation reaction between benzaldehyde and acetaldehyde.the feeds are contacted with sodium hydroxide in a stirred tank reactor.
Calculate the value of critical radius ratio for coordination number of 4 in an ionic compound (that is, convince yourself by calculation that the value given in the text is correct.) (b) Repeat for a coordination number of 8. Sketch a face centered ..
The composite shaft consists of three sections: 1) a solid brass core, 2) a middle steel tube, and 3) an outer aluminium tube. The brass core (Gb= 39 GPa) has a diameter of 50 mm. The steel tube (Gs= 77 GPa) has an inner diameter of 50 mm and an ou..
An autoclave contains 1000 cans of pea soup. It is heated to an overall temperature of 100°C. If the cans are to be cooled to 40°C before leaving the autoclave, how much cooling water is required if it enters at 15°C and leaves at 35°C?
Determine whether the block shown is in equilibrium and find the magnitude and direction of the friction force when θ= 25° and P = 150 lb
an ideal gas undergoes a two-step process. beginning at state 1 it is pressurized at constant volume to state 2. then
consider a brayton cycle with the following given data pressure ratio 9.2 air at compressor inlet is at 25 deg f air
a steel cable is used to support an elevator cage at the bottom of a 2000 ft deep mineshaft. a uniform normal strain of
A water tower sits atop a residential building as shown in the figure below. A 0.3m X 0.3m patch was used to repair damage from a recent storm. Water is supplied to the building via a 0.2m diameter main that connects to a faucet in the building's cou..
How many governing field equations can be formulated from the conservation laws? How many unknown field variables are there? and What are the missing equations?
A water pump is required to pump 0.23ft3/sec of water at 60F at atm up to 100psi gage. of the pump has an estimated isentropic efficiency of 50%, determine the power required (HP) to drive the pump.
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