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Aluminium fins of triangular profile are attached to a plane wall whose surface temperature is 250 oC. The fin base thickness is 2 mm, and its length is 6 mm. The system is in ambient air at a temperature of 20 oC, and the surface convection coefficient is 40 W/m2·K. (a) What are the fin efficiency and effectiveness? (b) What is the heat dissipated per unit width by a single fin?
identify the approximate values of each of the parameters listed below based on the graph.a yield strengthb tensile
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the density of atmospheric air is about 1.15 kgm3which we assume is constant. how large an absolute pressure will
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Find the theoretical work required per unit mass for the isothermal compression of 800 m3 air from 100KPa to 900 KPa in closed system.
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Compute the first energy level (in eV) for a particle trapped in a 0.1 nm region. Assume the mass of the particle is equal to 0.511 MeV/c^2
consider a 12-cm-thick plane wall with its inner surface temperature fixed at 0 degrees celsius. when its outer surface
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