Question: Air flows through a heating duct with a square crosssection with 8-inch sides at a speed of 5.0 ft/s. Just before reaching an outlet in

Air flows through a heating duct with a square crosssection with 8-inch sides at a speed of 5.0 ft/s. Just before reaching an outlet in the floor of a room, the duct widens to assume a square cross-section with sides equal to 12 inches. Compute the speed of the air flowing into the room, assuming that we can treat the air as an incompressible fluid.

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