Consider a fin on the condenser of a refrigerator. Generally, these are wires that are connected to a hot tube at both ends. Consider such a wire with a length of 0.1 m and a diameter of 1.0 mm. The base temperature is 35oC with an ambient temperature of 20oC. The convection coefficient is h = 10 W/(m2 oC). On a single plot, plot the temperature profile of the fin, T(x), for the following fin materials: aluminum, AISI 1010 steel, AISI 316 stainless steel, and copper.

Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.

Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.