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The working principle of a washing machine is known as

  • A.reverse osmosis
  • B.diffusion
  • C.centrifugation
  • D.dialysis

Answer: C

A washing machine's spin cycle works by centrifugation.

The drum spins rapidly, and the water in the fabric, having no centripetal force to hold it in a circle, moves outward and escapes through the perforations while the clothes are held by the drum wall.

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