9. Consider a mercury-in-glass thermometer. The capillary tube has a diameter of 0.004 cm, and the bulb has a diameter of 0.25 cm. Suppose that the mercury just fills the bulb at 0.00°C. Neglecting the expansion of the capillary tube so that its cross sectional area is constant, find the change in height of the mercury column if the temperature drops from 23°C to 9°C.

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