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A narrow tube is sealed onto a tank as shown in the figure. The base has an area of 90 cm².

a. Find the force on the bottom of the tank due to oil when the tank and capillary are filled with oil (p=0.72 g/cm³) to the height h₁.

b. Find the force on the bottom of the tank and capillary are filled with water to the height h₂.

h, = 35 cm
18 cm
- 20 em

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