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Nitrogen at 80 kPa and 400 K enters an adiabatic diffuser steadily at a flow rate of 6000 kg/h at 230 m/s and leaves at 100 kPa at 30 m/s. Describe the main function of diffuser.
A closed steel bottle contains carbon dioxide at -20 degrees C, x=20% and the volume is 0.05 m^3. It has a safety valve that opens at a pressure of 6 MPa. By accident, the bottle is heated until the
If members AC and AB can support a maximum tension of 300 lb and 250 lb, respectively, determine the largest weight of the crate that can be safely supported. AC on y axis is 4 ft. AC on x axis is
A 10 cm by 10 cm by 10 cm rubber engine mount (E = 30 MPa, Poisson ratio = 0.4999) must support a 250 kg motor. What (maximum) deflection (in cm) will occur for A.) vertical and B.) horizontal mount
The material used in its construction can be considered equivalent to rough concrete. At what rate (m3/s) is water being supplied to Cologne?
Liquid water enters a manifold (series of pipes) at 1075 psi and 125 °F with a mass flow rate of 3.22 x 10^6 lbm/hr and flows through a number of one inch diameter tubes.
The static design yields a mass of 50kg and that the bar be made of steel of length 0.25m with a cross-sectional area of 0.01m^2. Compute the system's natural frequency.
Air flows through a well-insulated nozzle operating at steady state. At the inlet, the pressure is 4 bar, the temperature is 525 K, and the velocity is 122 m/s. At the exit, the pressure is 2.5 bar
A 4.0 A current is set up in a circuit for 7.0 min by a rechargeable battery with a 3.0 V emf. By how much is the chemical energy of the battery reduced?
Explain whether this pressure cooker is operating under steady-flow process or not. Find the exit velocity of saturated vapor, in m/s.
A closed system contains 2kg of air undergoes an isothermal process from 600kPa and 100oC to 80kPa. Determine the internal energy change, the work done and the heat transfer during this process.
Find an expression for how the daimeter of of glass cylinder containing the mercury must change with length for the height of the mercury column to vary linearly with temperature.
A vertical piston-cylinder device initially contains 0.25 m3 of air at 600 kPa and 300°C. Determine the final temperature in the cylinder, the boundary work during the process and the heat transfe
A long solenoid has a diameter of 12.0 cm. When a current i exists in its windings, a uniform magnetic field B = 27.0 mT is produced in its interior. By decreasing i, the field is caused to decrease
Water is circulating through a closed system of pipes in a two floor apartment. On the first floor, the water has a gauge pressure of 3.4X10^5 Pa and a speed of 2.1m/s. However, on the second floor,
The air passing through the valve has a speed of 300 m/s and a density of 6 kg/m^3. Determine the instantaneous rate of change of density in the tank at t+0.
It is known that the boundary thickness at the position 8 cm from the leading edge is 1.2 mm thick. What is the boundary layer thickness at the position of 2 cm from the leading edge?
Water vapor is cooled in a closed, rigid tank from 540 degrees Celsius and 100 bar to a final temperature of 270 degrees Celsius . Determine the final pressure, in bar, and sketch the process on T-
A standard deviation of 0.03 mm. If 250 shaft and hubs are tested, how many would you expect to exhibit 'satisfactory fit'. Assume hub and shaft are normally distributed. Clearance is Inner diamet
Calculate the temperature difference across the thickness of the 5-mm-thick aluminum plates. Comment on whether it is important to know the axial locations at which the temperatures of the aluminum
What is the flow rate of cell suspension from the membrane tubes? What is the flow rate from the annular space? Assume the cells are not active, i.e. they do not grow.
What is the minimum power required to drive the heat pump (kW)? b) For the same power as in part a), what is the maximum outside temperature (°C) for which the house can be maintained at 25°
The rotation of rod OA about O is defined by the relation ?= 0.5e^ -0.8t*sin3pt, where ? and t are expressed in radians and seconds, respectively.
In kidney dialysis, a person's blood is passed through a bath that contains several ions and molecules. The blood is separated from the dialysis fluid by a membrane that allows water, small ions, an