When two smooth surfaces are in contact, they start to form bonds and begin to stick to each other. This phenomenon is called ________.
A
magnetism
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B
cohesion
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C
plowing effect
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D
adhesion
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Solution
The correct option is D adhesion
When two smooth surfaces like glass are in contact, they start to form bonds and begin to stick to each other. This phenomenon is called adhesion.
In smooth surfaces, adhesion is the main cause of friction.