9.29 A capillary-tube flowmeter is being constructed to measure the flow rate of water. The glass tubing has an inside diameter of 1.50 mm and the pressure taps are located 0.35 m apart. (a) Estimate the flow rate if the manometer reading is 260 mm of mercury and the water temperature is 20C. (b) How much error results if the water temperature increases to 30C? Neglect any effects due to expansion of the glass with temperature change.