Answer
Following forces allow the blood to travel up the capillary tube:
1. Adhesive forces: Blood is a fluid and it exhibits the property of adhesion. This adhesion with the walls of capillary tube allow the water to travel upwards.
2. Cohesion: This force binds the blood molecules together, however, this force is weaker as compared to adhesion, so blood travel upward consistently.
3. Surface tension: Fluids have surface tension. This force acts to maintain the surface of the blood in capillary tube
Work Step by Step
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