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Determine the acceleration of the mass center of the disk and the components of the force exerted on the disk by the curved surface when therta=60 degrees.
A normal shock wave exists in Mach 2 stream of air having temperature and pressure of 45°F and 30 psia, respectively. Calculate the Mach number, pressure, and temperature downstream of the shoc
A long flat bar has the S-N diagram. The bar is 6in wide by .5 in thicj. It has a 2 in hole in the middle. What is the max load the bar can carry if loaded one time?
Assume that heat is transfered to the working fluid in the boiler from a reservoir at 1400K and that the fluid ib the condensor rejects heat to the surroundings at 25C. Calculate the power required
Compare the relative properties and cost of three ceramic materials (b) On the basis of this comparison, select the material most suitable for the cookware.
The surroundings are at a constant temperature of 20°C. Determine the change in entropy of the system, the surroundings, and the universe during this process.
Estimate, as closely as possible, the entropy change of the universe. You may assume that argon behaves as an ideal gas. Do you think this expansion process as a whole can be treated as reversible?
Determine: First drawing your schematic and numbering your inlets and outlets. Draw your process for each fluid (water side and bleed steam side) each on a separate T-s diagram.
Pressures change from 325 K and 125 kPa to 500 K and 300 kPa respectively. Find the polytropic exponent n and the mass specific work in the process.
Compute the lift L and drag D experienced by the aircraft as well as the total normal force imposed on the 90-kg pilot by his seat.
Compute the weight percent of gold that must be added to silver to yeild an alloy that contains 5.5e21 Au atoms per cubic centimeter. The densities of pure Au and Ag are 19.32 and 10.49 g/cm^3, resp
Calculate the strains in the upper and lower falnges if the beam is subjected to a bending load and the bridge output voltage is 40mV.
Using the mechanical energy balance, estimate the time required for the water level to drop from an upper piece of tape (42.0cm) to the lower peice of tape (34.0cm) on a cylindrical tank.
A 15-tooth pinion having a pressure angle of 25º and module of 8mm is to drive an 18-tooth gear. Determine for both of the pinion and gear Pitch Circle Diameters.
What delta P must be generated by the pump? Comment of the practicality of the engineer's desire for the flow to be laminar?
Determine the specific volume for the following saturated water a) 15 psi, x=0.5 b) 90 psi, x=0.4 c) 145 psi, x=0.3 d) 650 psi, x=0.2 e) 3000 psi, x=0.1 f) 11 bars, x=0.6 g)
A 20 mm ID steel tube carries liquid at 10 MPa. Assume that the tubing is very long. Determine the principal stresses in the wall if its thickness is 0.5 mm.
Solid carbon reacts with steam to produce carbon monoxide and hydrogen. Given an H/C atom ratio of 1/1 and an O/C atom ratio of 1/1, find the equilibrium composition at 1500 K and at 1 atm.
Initially, 1.361 kg of steam is contained in a piston-cylinder device at 260 oC with a quality of 0.7. Determine the work done BY the steam ON the piston.
What is the yearly cost, in the terms of lost rental income, if the stone mix concrete wall with polystyrene insulation is specified?
Sketch the process on a P-v diagram, indicating the relative position of the saturation curve. Find the work done per pound of water during the expansion.
What thickness of extruded polystyrene sheet must be applied onto the inner surface of the stone mix concrete wall?
5ft3 of ammonia is initially at 100 psi and a specific volume of 0.024ft3/lbm is heated or cooled to make this an isothermal process until half of the mass is gas and the remaining is liquid.
Now sketch the cycle on a pressure-volume diagram, determine the volume at state 1, work and heat transfer for process 1 to 2 and justify that weather this is a power cycle or refrigeration cycle.
An automobile tire with a volume of 0.5m3 is inflated to a gage pressure of 200 kPa. Calculate the mass of air in the tire if the temperature is 10 oC. Take barometric pressure to be 100 kPa.