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Calculate the mass an linear absorption coefficients of air for Cr K alpha radiation. Assume that air contains 80 % nitrogen and 20 % oxygen by weight and has a density of 1.29*10^-3 g.cm^3.
Helium is used to operate an 18 hp gas turbine. The gas enters the steady-flow device at 220 ft/s through an area of 0.020 ft2. The inlet state is 40 psia and 440OF. Compute the heat transfer rate i
Steam enters a nozzle at 30 bars and 320C and leaves at 15 bars with a velocity of 535 m/s. The mass flow rate is 8000 kg/h. Neglecting the inlet velocity and considering adiabatic flow, compute: th
a. Where along the plate is T = Tmax? b. Is the flow laminar or turbulent? Justify your answer. c. What is the total heat which can be dissipated if the plate temperature is not to exceed 80 °C
Determine the magnitude and coordinate direction angles of the resultant couple moment. Determine the magnitude of the resultant couple moment.
Calculate the convective heat transfer coefficient. Determine the heat transfer in W for an isothermal plate maintained at 57 °C.
Air at 7 kPa and 35 °C flows over a flat plate at 7.5 m/s. The plate is 30 cm square and is maintained at 65 °C. Determine if the air flow is laminar or turbulent. Justify your answer.
Determine the mole fractions of polyvinyl chloride and polyvinyl acetate in a copolymer having a molecular weight of 11,000 g/mol and a degree of polymerization of 150.
Find the force required for the direct extrusion of commercially pure aluminum (1100-O) billet 8 in in diameter into a rod 2 inches in diameter.
A mass of 3 kilograms of steam at 2 MPa and 250°C are contained in a rigid tank. How much heat must be removed from this vessel to cool it to a saturated vapor.
What does the employee coaching process involve and what kinds of employees will benefit from the process? Describe the role of performance coaching in career patching.
Assuming there is no friction, what will be the final height of the workpiece if a 3 MN forging press is used, and the flow stress is estimated to be 85 MPa?
Using both graphical and analytical methods in assessing the stability of the rock mass and calculate factors of safety for both the intact rock and the discontinuity for the following stress condit
In order to have the machine deliver 100,000 Nm/kg of air without any heat input, what is the exit air speed? What is the exit speed when the machine is idling?
Suppose that a nickel filter is required to produce an intensity ratio of Cu K alpha to Cu K beta of 100/1 in the filtered beam. Claculate the thickness of the filer and the transmission factor for
Calculate the change in the enthalpy and the change in entropy when one mole of SiC is heated from 25 degree Celcius to 1000 degree Celcius.
Find the overall efficiency of the pump. Disregard friction and kinetic energy. Find the pressure difference between the inlet and the exit of the pump.
The steam exits the turbine at a pressure of 40 kPa and a quality of 0.96. Determine the specific work and mass flowrate of the steam to produce an output of 500 kW.
The acceleration of a fluid element at a point (1,2,-1) at time t=0.5. Identify the value of local and convective component of acceleration in xdirection y direction and z direction.
What are two half cell reactions and their electrode potentials? Calculate the cell equilibrium potential, Ecell (voltage difference between two Pt electrodes).
Determine the net force acting on block A. Using Newton's 2nd law, formulate the equation of motion for block A and solve for its acceleration.
Now steam is compressed at constant pressure until its temperature rises to 250oC. The work done during this compression process is?