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For a free vortex (see Video V6.4) determine an expression for the pressure gradient
(a) along a streamline, and
(b) normal to a streamline. Assume that the streamline is in a horizontal plane, and express your answer in terms of the circulation.
Suggest why it is important to make a distinction between developing the user requirements and developing system requirements in the requirements engineering process.
we find that 10h are required to successfully carburize a batch of 500 steel gears at 900cwhere the iron has the fcc
an engine operates on an air-standard otto cycle. the pressure and temperature at the beginning of the compression
some bacteria are propelled by biological motors that spin hair-like flagella. a typical bacterial motor turning at a
the ram of a pile driver has a mass of 800 kg and is released from rest 2 meters above the top of a 2400 kg pile. the
A similar caisson is placed in open water, on a layer of sand. The water level is 5 m above the top of the sand, so that the top of the caisson is 5 m above water. Again calculate the average total stress and the average effective stress just belo..
liquid water is cooled at a constant pressure of 200 kpa in a piston-cylinder device from a temperature of 110 degc to
The internal bending moment acting on the cross section of the channel strut has the magnitude and direction shown. First calculate zbar to locate the centroid C of the strut's cross sectional area.
the rigid beam shown is supported by three cylindrical posts which rest on a rigid base a 20 mm dia. brass post at be
A long aluminium cylinder 50cm in diameter is initially at a uniform temperature of 200°C. It is suddenly subjected to a temperature of 70°C and h = 535W/m2K. How long will it take for the surface temperature to reach 100°C.?
The concrete walls and roof of a garage are 15-cm thick. The inside dimensions of the garage are 8-m long, 6-m wide, and 2.5-m high. The door is made of 12-mm thick hardwood and is 6-m wide and 2.5-m high. The garage is modeled in the figure below. O..
The mean diameter of a conical friction clutch is 250mm with a width of the conical surface being 50mm. The clutch is lined with a material having a coefficient of friction of 0.25
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