At a particular instant water flows into the tank shown through pipes A and B, and it flows out of the tank over the rectangular weir at C. The tank width and weir length (dimensions normal to page) are 2 ft. Then, for the given conditions, is the water level in the tank rising or falling?

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1 ft Diameter = 1 ft 2 ft A 4 ft/s 4 ft/s -Diameter = 6 in. B