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A variable mesh screen produces a linear and axisymmetric velocity profile as indicated below in the air flow through a 2-ft diameter circular cross section duct. The static pressures upstream and downstream of the screen are 0.2 and 0.15 psi and are uniformly distributed over the flow cross section area.Neglecting the force exerted by the duct wall on the flowing air, calculate the screen drag force.
Axis of the hole is perpendicular to VP. Draw elevation, plan and development of the lateral surfaces of the pyramid.
An intersection approach volume is 1,500 veh/h and includes 12% left turns with a through-vehicle equivalent of 2.3 tvu's/left turn. What is the total equivalent through volume on the approach
the turbopump unit in the engine nominally operates at 7000 rpm, and a result of design issue, the actual thrust provided by the engine oscillates harmonically with an amplitude of 10 KN at the same rotational frequency as the turbopump unit.
A large drainage channel has a trapezoidal cross section with a bottom width of 75 feet and bank side slopes of 4:1 (H:V). If the normal depth of flow is 25 feet, compute the normal flow rate through the channel (Q in cfs).
A body weighing 120 lb with a flat surface area of 2 ft^2 slides down a lubricated inclined plane making a 30 degree with the horizontal. For a viscosity of 0.002 lb*s/ft^2 and body speed of 3 ft/s, determine the lubricant film thickness.
The number of parking tickets issued in a certain city on any given weekday has a Poisson distribution with parameter = 50. What is the approximate probability that 1 between 35 and 70 tickets are given out on a particular day
A particle which moves in two-dimensional motion has coordinates given in inches by x=t^2-4t+20 and y=3sin2t, where the time t is in seconds. Determine the magnitudes of the velocity v and the acceleration a and the angle between these two vectors..
The traffic on the one-way main street shown below may be satisfactorily described by a Poisson process with an average rate of arrival of 8 cars per minute. A driver (indicated by the box) on the side street is waiting to cross the main street.
Block D sits freely on the homogeneous bar and experiences a gravitational force of 50N. Homogeneous bar AB experiences a gravitational force of 25 N. What is the force between the bar and block D?
Ocean water contains 0.9 ounce of gold per ton. Method A costs $220 per ton of water processed and will recover 85% of the metal. Method B costs $160 per ton of water processed and will recover e of the metal.
In dating using radiocarbon, the amount of C^14 remaining at the time of measurement is expresed as a percentage of modern carbon. For example that the 30% modern carbon, N/No would be 0.3
If the elevation difference between the water surfaces is y = 25 + x/11 metres, what minimum pipeline diameter will be required to convey the design discharge? Once your design is complete, determine the actual discharge. The value of x equals 23.
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