Q3: A 33.8-lb aluminium bar, initially at 200 oF, is placed in a tank together with 249 lb of liquid water, initially at 70°F, and allowed to achieve thermal equilibrium. The aluminium bar and water can be modeled as incompressible with specific heats O.216 Btu/lb °R and 0.998 Btu/lb °R, respectively. For the aluminium bar and water as the system, determine (a) the final temperature, in °F, (b) the amount of entropy produced within the tank, in Btu/oR. Ignore heat transfer between the system and its surroundings.

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