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Liquid mercury enters an insulated sudden expansion with a velocity of 1.15 m/s at 20.0°C. The inlet and exit areas are 1.00 × 10-3 and 0.00 × 10-2 m2 , respectively.
Assuming the flow is incompressible and adiabatic, determine the exit temperature and the entropy production rate of the expansion. The specific heat and density of the mercury are 0.1394 kJ/(kg · K) and 13,579 kg/m3 .
Using n=2 in 2 in Chvorinov's rule, calculate the mold constant B. Then compute the solidification time of a 0.5inch by 8inch by 8 inch casting poured under the same conditions?
structure of body- centered cubic bcc crystal.a. the body-center atom in a conventional bcc unit cell has
assuming that the diameters of 1000 brass plugs taken consecutively from a machine form a normal distribution with
the pilot of flighter plane f is following 1.5 behind the pilot of bomber b. both planes are originally traveling at
Assuming for air that γ = 1.33 and R = 287 J/kg K, determine the value of Whitfield's power ratio, S, and the total-to-static efficiency of the turbine.
a fully loaded lorry has a mass of 10 tonnes and is travelling along a road at uniform velocity when the brakes are applied and the lorry is brought to rest. if the deceleration is 2m/s2 and the coefficient of rolling friction is 0.15, determine t..
Using the Worrell-Stessel efficiency definition, what air velocity yields the highest efficiency?
A 10 kg metal block initially at 200 degrees Celsius and 1 MPa is heated to 500 degrees Celsius and 100 MPa. The metal block has a density of 2000kg/m^3 and a specific heat of 2kJ/kg*K. Calculate the change in the total internal energy and enthalpy o..
Two groundwater monitoring wells are located 100 m apart. The pressure of the water in the wells are measured using pressure transducers that reads gage pressure.
nitrogen gas at 60 kpa and 7 degc enters an adiabatic diffuser steadily with a velocity of 200 ms and leaves at 85 kpa
an insulated piston-cylinder device contains 2kg of saturated liquid water with an electric resistance heater in the
2000 kgh of steam drives a turbine that delivers 75 kw of shaft work. superheated steam at 5 bar enetrs the turbine at
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