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Physical Science (Ms. Sue)

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Why does some friction occur with seemingly smooth surfaces?

  • Physical Science (Ms. Sue) -

    Look at it under a microscope. There is nothing that is "smooth"

  • Physical Science (Ms. Sue) -

    A smooth surface is not actually smooth; it may have many microscopic bumps on its surface.
    Because on the molecular level, they are not smooth.

    or just search it up on google. it has a bunch of good answers

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