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A constant-volume tank contains 10 lbm of ammonia initially at 30 lbf/in^2 and 80(deg)F (539.67(deg)R). The ammonia is then cooled until its pressure drops to 10 lbf/in^2. Determine its entropy change from the initial state to the final state.
the rotor shaft of a helicopter drivesd the rotor blades that provide the lifting force and is subjected to a
a longitudinal fin with b30 cm is made of aluminum k237 wm-k and has a base temperature of 80oc. the fin
for the wide-flange beam with loading shown determine the largest load p that can be applied knowing that the maximum
consider an evacuated rigid bottle of volume v that is surrounded by the atmosphere at pressure p0 and temperature t0.
Company wants to use a 100 m long steel cable to pull an airplane glider. If the glider has a mass of 1000 kg, and assuming the load is given by F=mg = 9800 N, and if the Young’s modulus of steel is 200 GPa (200,000,000,000 Pa), and Poisson’s ratio i..
A thin-walled cylindrical pressure vessel is capped at the end and is subjected to an internal pressure (p). The inside diameter of the vessel is 6 ft and the wall thickness is 1.5 inch. The vessel is made of steel with tensile yield strength and com..
calculate factors of safety and assess the stability of unsupported excavation using only conventional kirsch equation
A one dimensional wall of material (Kw=10w/mk) is 50 mm thick with uniform heat generation q‘‘‘=5*10^6w/m^3. The left side is exposed to a fluid hl=500w/m^2k at 20 degree Celsius. The right side has a 10mm thick plate attached that has no heat genera..
a. determine the density of air at mile high stadium in denver colorado on a warm summer evening when the temperature
a stream of refrigerant-134a at 1 mpa and 12 c is mixed with another stream at 1 mpa and 60 c. if the mass flow rate of
1. A Brayton cycle uses air and produces a net work of 14000 Btu/s with an inlet state of 60°F, 14.7 psi and a compression ratio of 16. The heat added in the combustion process is 400 Btu/lbm. If the thermal efficiency is 0.547 Determine: Using va..
Determine the heat transfer coefficient for laminar flow over this cylinder. First, at your discretion, select an available set of experimentally obtained data from the literature. Then, this would provide you with a set of Reynolds numbers.
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