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A 0.16 kg hockey puck (rubber disk) is moving on an icy, frictionless, horizontal surface. At t =O, the puck is moving to the right at 3.0 mis. Calculate the velocity of the puck (magnitude and direction) after a force of 25 N directed to the right has been applied for 0.05 sec.
A 1m3 rocket propellant chamber is filled with combustion gases at 3000 K and 7 Mpa at the instant combustion ceases. The throat area of the nozzle is 0.1m2. Estimate the time it takes for the chamber pressure to drop to 0.7 MPa. Assume that the inst..
A cube of linear elastic material is subjected to a vertical compressive stress sigma1 in the 1-direction, but it is now constrained ( e = 0) in both the 2- and 3- directions. Find expressions for the induced transverse stresses, sigma2 and sigma3 in..
A motor has a disk mounted on its shaft. The disk has a diameter of 1 foot and weighs 60 pounds. Starting from rest, the motor rotates at 350 rpm after 5 seconds. If the motor has a 92% efficiency, determine the input power in watts.
Assume a labor rate of $50.00/hr and a burden rate of $25/hr. Assume a surface speed of 2000 ft/min. The number of teeth on the cutter is 4. The feed is 0.005 in/tooth. The depth of cut is 0.020”. The width of cut is equal to the diameter of the t..
a cylindrical pressure vessel of diameter 2 m and wall thickness 20 mm is subjected to an internal pressure of 20 bar 2
consider a reheat cycle utilizing steam as the working fluid. steam enters the high pressure turbine at 3.5 mpa 400oc
One easy way to measure diffusion coefficients is the diaphragm cell shown in Fig. 2.2-4. These cells consist of two well-stirred volumes separated by a thin porous barrier or diaphragm. In the more accurate experiments, the diaphragm is often a sint..
Superimpose a uniform ?ow V ¼ 10i m=s, a doublet m ¼ 40 m3/s, and a vortex. Locate any stagnation points and ?nd the minimum pressure on the cylinder if the pressure of the standard atmospheric air is zero at a large distance from the cylinder.
design a single axis sc attitude controllerassumptionsj 400 newtonmetersec squareddisturbance torque t sub d .01 nm
helium initially at 327 deg. c and 100 kpa is contained in a frictionless piston-cylinder. the system is slowly cooled
Air in piston/cylinder at 200 kPa, 600K is expanded in a constant-pressure process to twice the initial volume (state 2). At this point, the piston is locked with a pin and heat is transferred to a final temperature of 600K. Find the work and heat..
Identify three things that could be significantly improved in the sand mold design if our intent was to produce screwdriver handles commercially. Explain what would be improved for each thing you identify.
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