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A watertight bulkhead 22 ft high forms a temporary dam for some construction work. The top 12 ft behind the bulkhead consists of sea water with a density of 2 slugs/ft3 , but the bottom 10 ft begin a mixture of mud and water can be considered a fluid of density 4 slugs/ft3 .
Calculate the total horizontal load per unit width and the location of the center of pressure measured from the bottom.
A mixture of air and water at a temperature of 30ºC and a pressure of 750 mmHg has a relative humidity of 75%. The wet gas is compressed to 40 psia and cooled to 20ºC. How many cubic meters of original gas were compressed if 0.75 lb of condensate (wa..
Calculate the approximate amplitude of steady-state motion assuming that both the mass and the surface that it slides on are made of lubricated steel.
the pressure inside the cylinders of a diesel engine reaches a maximum pressure of 100atm during combustion. the
Determine the specific volume, in m3/kg, of Refrigerant 134a at 16 bar, 100°C, using (a) Table A-12. (b) Figure A-1. (c) The ideal gas equation of state. Compare the values obtained in parts (b) and (c) with that of part (a)
Water enters a reach of rectangular channel where y1 = 0.5 m, b = 7.5 m, and Q = 20 m3 /s (Fig. P10.39). It is desired that a hydraulic jump occur upstream (location 2) of the sill and on the sill critical conditions exist (location 3). Other than ..
Assume the van der Waals equation of state holds for the n-propane molecule (C3H8). Find values for the constants a and b (online) and use these to calculate the density in (g ml^-1) at a temperature of 1000K and a pressure of 10 atm. The equation or..
What information does a load report contain? Why is it useful to production activity control?
there is 0.7kg of nitrogen in a piston-cylinder device. initially the nitrogen is at 110kpa and 25 celcius and then it
two 455000-lb locomotives pull 58 230000-lb coal hoppers cars. the train starts from rest and accelerates uniformly to
on an overflow structure of 50 degrees slope the water depth measured normal to the surface of the structure is 1.2 m 4
an air standard diesel cycle has a compression ratio of 17 the pressure at the beginning of the compression stroke is
The Knudsen number, Kn = Amfp/L, is a dimensionless parameter used to describe potential micro- or nanoscale effects. Derive an expression for the ratio of the thermal resistance due to molecule-surface collisions to the ther- mal resistance asso..
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