When a paint brush is removed from clean water, the bristles of the brush are pulled together because of
Question 1 Report
When a paint brush is removed from clean water, the bristles of the brush are pulled together because of
Answer Details
The correct answer is surface tension forces. Surface tension is a phenomenon that occurs because of the cohesive forces between the molecules of a liquid. When the paintbrush is immersed in water, the water molecules adhere to the brush bristles. When the brush is removed from water, the cohesive forces between the water molecules cause them to pull together, which in turn pulls the bristles of the brush together. This is due to the surface tension of the water, which acts like a thin film on the surface and creates the surface tension forces. The viscosity of the surrounding air, the low density of water, the weight or mass of the brush bristles do not play a significant role in this phenomenon.
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