Engineering, 30.11.2019 00:31 itryna1
Problem 6.085 air within a piston–cylinder assembly, initially at 50 lbf/ in.2, 510°r, and a volume of 6 ft3, is compressed isentropically to a final volume of 1.75 ft3. assuming the ideal gas model with k = 1.4 for the air, determine the: (a) mass, in lb. (b) final pressure, in lbf/in.2 (c) final temperature, in °r. (d) work, in btu.
Answers: 1
Engineering, 04.07.2019 18:10
Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux
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Engineering, 04.07.2019 18:20
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
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Engineering, 04.07.2019 19:10
10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.
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Engineering, 04.07.2019 19:20
Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.
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Problem 6.085 air within a piston–cylinder assembly, initially at 50 lbf/ in.2, 510°r, and a volume...
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