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A long concrete retaining wall with 2.4X10^3 kg/m^3 density is used to support a soil embankment. Assuming the soil behaves as a fluid with 1.5X10^3 kg/m^3 density, determine the required coefficient of friction so the wall does not slip along its base, and determine if the wall is safe from tipping.
2 instructors grade on a the curve that is give a fixed percentage of each various leter grades to each of their
the steam turbine power plant uses water as the working fluid and will be modeled as a simple ideal rankine cycle. the
a pressure gage reading is 20 mm deltahg. if the gage is located at an elevation of 2000m.what is the absolute
Find the enthalpy of the steam discharged into the condenser and the thermal efficiency of the cycle.
a room is heated by an iron that is left plugged in. is this a heat or work interaction? take the entire room including
consider a heat exchanger that uses hot air to heat cold water. air enters this heat exchanger at 20 psia and 200
A large tower is to be supported by a series of steel wires; it is estimated that the load on each wire will be 13,300 N (3000 lbf). Determine the minimum required wire diameter, assuming a factor of safety of 2 and a yield strength of 860 MPa (12..
for antoine equation in the formlog10vp a- btcwith vp in mm hg and t degree c the constants for n-pentane are a6.853
air enters an adiabatic diffuser operating at steady state at 540 degrees r with a velocity of 600 fts and exits with a
a two-engine jet transport has a loaded weight of 90000 lb and a forward thrust of 9800 lb per engine during takeoff.
air expands through a nozzle from a chamber pressure and temperature of 300 psia and 1000 r respectively to an exit
a cattle watering fountain has a free water surface with a size equal 0.6m x 0.3m with the longer side being parallel
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