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Consider the gas carburizing of a gear of 1020 steel at 927oC. Calculate the carbon content at 0.5mm beneath the surface of the gear at 5hr carburizing time. Assume the carbon content at the surface is 0.90% and that the steel has a nominal carbon content of 0.20%. The diffusion coefficient of C in 1020 steel at 927oC is 1.28 x 10-11m2/s.
R-134a enters the condenser of a refrigerator at 800kPa and 50oC at a rate of 0.018kg/s and leaves at 800kPa as a saturated liquid. It is known that the compressor consumes 1.2kW of electricity at this operating condition. Determine 1) heat rejection..
what gage material is used for a medium sized production for run? for higher-volume production? for situations
Compute the x-and y-components of the force acting on the pinB connecting the two members of the machine subjected to the 200-N load.
a hollow 6 ft. diameter sphere floats half-submerged in seawater. what mass of concrete is required as an external
100 lb of fluid food is heated by addition of 10000 btu of energy. if the food has initial temperature of 40degf and
in what way does asme code 1592 extend the asme boiler and pressure vessel code? what are the limits of code case
A cylinder with an area ratio of 0.2 and a bore diameter of 7.5 cm steadily extends a 13.3 kN load. If the cap-side pressure is 4 MPa and the rod-side pressure is 250 kPa, what is the force ecienccy of the actuator?
a measure of the stiffness of a linear actuator system is the amount of force required to cause a certain linear
calculate the overall efficiency the heat rate mw and the total fuel rate kgs of a combined-cycle power plant 1 if no
a brass rod .002 in. in diameter and 10 in. long is loaded in tension with 800lb. assume this load is within the
A 4.56ft3 rigid tank contains saturated refrigerant-134a at 100 psia. Initially, 11% of the volume is occupied by liquid and the rest by vapor. A valve at the top of the tank is now opened, and vapor is allowed to escape slowly from the tank. Heat is..
Draw free body diagrams and show coordinate system. Problem 1: An archer shoots an arrow vertically upward. If the arrow ascends to a maximum height of 100 feet.
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