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A glass capillary of inner diameter 50 um is filled with organic oil to a height of 2.0 cm and then immersed in water. The water below the oil climbs to 2.3 cm (see scheme). The parameters of the system are; Poil = 0.7 g/cm', Yoil-air = 18 mN/m, contact angle o ail-air-glass = 105 deg; Pwater = 1.0 g/cm', water-od = 52 mN/m. Estimate the contact angle oil-water- glass (Make sure to consider all possible forces and their direction, up or down). Oil 2.0 cm De-? Water 2.3 cm