two vertical tanks, one with circular section 3.0m in diameter, the other square section 1.33 x 1.33m are connected by a short tube ( area is 0.725 sq. cm) near bottom.initially, the head of oil in the first tank is 4.0m, while in the second tank the head is 60m. After a quick opening of the tube valves, find the time for the oil surfaces to equalize. Assume the tube properties to be similar to that orifice, with c= 0.78

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