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Calculate the energy for vacancy formation in silver, given that the equilibrium number of vacancies at 800?C (1073 K) is 3.6 X 1023 m-3.
Does this flow satisfy continuity? If it does, then find the velocity components. Determine the potential function. Sketch some stream lines and potential lines.
If the motor effieciency is 90%, and the brake efficiency is 75%, what is the power input required to the motor? Look up the water parameters required.
The room calculated sensible heat load is 108,000 btu/hr and latent load of 30,000 btu/hr. What is the cooling load in refrigeration tons.
An adiabatic, rigid deposit is divided in two compartments by a piston with diathermic walls capable of sliding without friction. Determine the preasure and temperature on compartments A & B in t
Air enters an evaporative cooler at 1 atm, 36oC, and 20 percent relative humidity at a rate of 4 m3/min, and it leaves with a relative humidity of 90 percent.
Assume a constant pipe resistant coefficient of 0.018. The valves, intake loss and fittings can be represented by K=8.5. Calculate the discharge and the hydraulic power. Check the pipe resistance co
The valve is shut off at the instant when all of the liquid in the tank has vaporized. a) How much refrigerant was added to the tank in kg? b) How much entropy was generated by this process in kJ/K?
Determine the moment of inertia about an axis perpendicular to the page and passing through the pin at O. The thin plate has a hole in its center. Its thickness is 50 mm, and the material has a den
Determine the constant angular velocity that the tank must be rotated in order that the center of the bottom of the tank is exposed. The density of water is 1000 kg/m3.
For a regenerator effectiveness of 85%, determine a) the net power developed, in MW b) the rate of heat addition in the combustor, in MW c) the thermal efficiency of the cycle.
A flat plate of irregular shape has a mass of 4 slugs and a radius of gyration about the z axis of kg = 0.8ft. Calculate the resulting angular velocity of the plate.
Calculate the percentage volume change that would occur if a material were to be transformed from FCC to BCC , Assume the atomic diameters are fixed and the atoms are packed together as rigid spher
Explain how the mechanical strength, melting temperature, and thermal expansion are related to atomic level. Specify how do the relate to each other and the energy between the atoms.
Consider a cold air analysis and use k=1.4/ Cv=0.718 kj/kgK/ Cp=1.005 kj/kgK. Sketch the cycle using a P-V diagram, calculate max pressure, and heat transfer into the cycle per unit mass in kj/kg.
If the snowball just passes over the head of child B and his child C, determine the radius of curvature of the trajectory described by the snowball. a) At point B b) At point C.
Determine time required to reach 80 Celsius while assuming heat transfer coefficient of h=W/m^2*C. Assume both disk's entire surface area is hit by the air flow.
Before the household plumbing is installed, the globe valve is opened all the way. What will the flow be from the pipe? Assume 75 psi main pressure.
What will the pressure be in the subdivision for each pipe? Use 1.05 x10-5 ft2/sec for the kinematic viscosity of water. 1.3 Will the mayor still get re-elected?
If it is desired to increase the antifreeze percentage to 50%, how many quarts of this mixture must be removed and placed with pure(100%) antifreeze?
The crate is then pulled by a hoist a distance of 3.4m across the flat truck bed in 8 seconds. Determine the work done in moving the crate and the power of the hoist when coefficient of friction is
Design a pair of spur gears to be used as a part of the drive for a wood chipper (heavy shock driven machine) in a paper mill. An electric motor (uniform driver) transmits 3.0 horsepower.
Write a program that uses "for loops" that inputs a 2 dimensional square array of [50][50] rows and columns. then the program will copy only the diagonal elements.
Assuming air to be ideal gas for which Cp = 7/2 R and Cv = 5/2 R, what are the compression ratio and the expansion ratio of the cycle?
Determine the power input to the pump in kW. Determine the power output from the turbine in kW. Determine the thermal efficiency of the cycle. Determine the isentropic efficiency of the turbine.