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1. Why is it that the strength of the heat-affected zone is higher for low-carbon steels? What is the role of retained austenite, in this case?
2. Why is it easier to weld low-carbon steels, however, it is difficult to weld high-carbon steels?
Calculate the magnitude and direction of the velocity of the fluid leaving the vane - the thrust on the vane in a horizontal direction
A steel needle of length L and radius r will ?oat in water if carefully placed. Write an equation that relates the various variables for a ?oating needle assuming a vertical surface tension force.
Determine the resultant of the three forces F1 = 2.0i + 3.3j - 2.6k; F2 = - i + 5.2j - 2.9k; and F3 = 8.3i - 6.6j + 5.8k, which are concurrent at the point (2, 2, -5.). The forces are in Newton's and the distances are in meters.
Then, plot the curve for velocity versus radius. Specified increments of radial position can be input, but should include the centerline.
a six cylinder four-stroke spark ignition engine runs at 3000 rpm. each cylinder has a bore of 85 mm and each piston
at time t0 the postion vector of a particle moving in the x-y plane is r5i m. by time t 0.02 s its position vector has
titanium w6.94x10-19j and silicon w7.77x10-19j surfaces are irradiated with uv radiation with a wavelength of 227nm.
What is the heating rate of the mixed layer in terms of the surface heat flux and boundary layer depth - State what properties of the Reynolds average you use in the derivation and any as- sumptions you make.
The piston is loaded, so it maintains constant pressure, and the two masses are allowed to mix to a final uniform state of saturated vapor without external heat transfer. Find the total exergy destruction in the process
consider a plate with uniform heat generation q. for k200 wmk q40 mwm3. t1160 c at x0 t2100 c at x2l and a plate
1 the barometric pressure is reported to be 605.5 torr and the temperature of the water is 22.5 c what is the pressure
A piston-cylinder device initially contains 0.007m^3 of nitrogen gas at 130kPa and 120C. The nitrogen gas is now expanded polytropically to a state of 100 kPa and 100C. Determine the boundary work done during this process. I know I need to use the fo..
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