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A cylinder fitted with a frictionless piston contains water at 300 kPa and 200 degrees C, at which point the volume is 0.2 m^3. The piston is now moved slowly compressing the water to a pressure of 700 kPa. During this process PV^(0.9) = constant. Assuming that the room temperature is 20 degrees C, show that the process does not violate the second law, by evaluating the entropy produced.
an office is occupied by 30 persons who each produce 200 btuh 58w of sensible heat and 0.25 lbh 0.1kgh of moisture. the
A cylinder with a 0.3 m inner diameter and 0.4 m outer diameter is internally pressurized to 140 MPa. Determine the maximum shear stress at the outer surface of the cylinder.
a 0.018 cubic meter rigid tank is filled with saturated liquid water at 120c. a valve is opened until half of the mass
a dragster starts from rest and has an acceleration described by the graph. determine the time t for it to stop. also
coming out of a factory chimney are the following gases co2 so2 o2 n2 h2o with volume percentage to be 13.5 0.3 5.2 76
a light truck weighs 3100 lb and is rated at 30 miles per gallon for a 60 mph highway driving on level ground. how much
Calculate drag force on flat bottom boat. What power is required to keep the boat moving at 0.5 m/s?
the pressure inside a system varies inversely with the square of the system volume. determine work required to compress
a 1 meter section of 1040 steel square tubing is loaded in tesnion. the tubing has an outer edge length of 10mm and a
A fluid flow axially in the annular region between two concentric pipes with radii R1 and R2>R1, respectively. Assume the flow is steady, incompressible, axisymmetric, fully-developed, and has no swirl. Also neglect all body forces.
in a contraption built by a fraternity a person sits at the center of a swinging platform with mass m 400kg and length
Compare the inlet steam mass and volume flow rates in pound mass per second and cubic feet per second of (a) a fossil-fuel power plant turbine having a polytropic efficiency of 0.90 and receiving steam at 2400 PSIA and 1000F and (b) a nuclear power p..
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