Question 45

A glass capillary with inner diameter of $$0.40\ \text{mm}$$ is vertically submerged in water so that the length of its part protruding above the water surface is $$h=25\ \text{mm}$$. Surface tension of water is $$T=0.073\ \text{N m}^{-1}$$. Since the water wets the glass completely, it may be concluded that the

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