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For an overall turbine-generator efficiency of 83% determine the minimum flow rate required to generate 100KW of electricity.
What is the maximum mass (in kg) that can be safely applied to a sample with a cross-sectional area of 350 mm? (Safely means no plastic deformation.) What is the corresponding strain?
You place an aluminum single crystal (FCC) under tension with the (100) plane normal to the loading axis. Calculate the resolved shear stress under an applied stress of 40 MPa.
The diameter at the point of fracture is 6.06 mm, and the fractured gauge length is 74.3 mm. Calculate the ductility in terms of (a) percent reduction in area (percent RA), and (b) percent elongatio
Determine the magnitude of force acting on the crate. The coefficient of kinetic friction between the crate and the ground is 0.23.
Calculate the work done by the frictional force acting on the crate during this interval if the static and kinetic friction coefficients of friction between the crate.
The condenser pressure is 1psia. After determining that the turbine stages and pumps operate isentropically, determine the thermal efficiency of the cycle.
In a vapor-compression refrigeration cycle, R-134a exits the evaporator as saturated vapor at 20lbf/in2. Determine the mass flow rate of refrigerant, in lbm/min.
If the pin is then removed and the air in the cylinder adjusts rapidly to its new state in adiabatic process, determine the pressure, temperature and volume at this new state.
How do you think this will affect the temperature of the final solution if mixed? How do you think making variations in the second volume would affect the final temperature?
Calculate the fraction of sites in lead (Pb) that are vacant near its melting temperature of 327°C. Assume an activation energy for vacancy formation of 0.55 eV/atom.
Calculate the classical radiation loss (Larmor's formula) from an electron bound in hydrogen atom in units of eV/s. Assume that the electron is following a circular orbit with radius of 5x10^-11 m a
The balloon material is such that the pressure inside is always proportional to the square of the diameter. Determine the work done when the volume of the balloon doubles as a result of heat transfe
The back car has twice the inertia (mass) of the front car. When the back car hits the front and the bumpers lock, how fast will the two cars be moving?
What is the kinetic energy of the vehicle in Btu? If gasoline costs $4.10/gallon, how much money is saved by not stopping at the stop sign? Use your answer from part (c).
If 35% of the total mass escapes into the atmosphere while the temperature is held constant, what is the phase of the remaining contents?
Write a short report that outlines both the process if polymerisation and the potential uses of plastics and rubber in engineering?
Calculate the static pressure in the exhaust jet stream at the nozzle exit for the following ambient pressures:4.5 MPa, 3.5 MPa and 0.8 MPa. Calculate the mass flow rate for the same three conditions
Under ideally expanded conditions the exit pressure is 100 kPa; what is the Mach number and the velocity at the exit?
The nozzle is adiabatic and there are no losses. (a) Calculate the flow rate. (b) Determine the throat area. (c) Calculate the exit area.
Determine the maximum steady-state hay temperature for dry hay (q dot = W/m^3), moist hay (q dot = 10 W/m^3), and wet hay (q dot = 100 W/m^3).
Determine the tangential force F and the normal force N acting on the collar when theta = 45 degrees, if the force F maintains a constant angular motion theta dot = 2 rad/s.
The water receives 8 BTU by heat transfer. Determine the temperature, in degrees F, presssure in lbf/in^2, and quality of the water at its final state.
Determine the maximum depth of water possible without the wall tipping over. The wall simply rests on the ground without being anchored to it.
Write a computer program which uses Newton's method to solve for both roots of the following system of nonlinear equations.