There are two water tanks a and b separated by a vertical wall with a hole at 3. water is steadily áowing in at 1 into a rectangular tank a with a length of 5 ft and a width of 5 ft (into the paper). the áow rate at 1 is measured as q_ 1 = 5 ft3/s . at the time instant of interest, h1 = 15 ft, and water is also steadily áowing out into tank b at the rate of 4 ft3/s. at this instant, h2 is 12 ft. tank b has a length of 8 ft and the same width as tank a