Physics problems

  • 1. A flat plate is moving normal to its plane through a gas under the action of a constant force F. The gas is kept at very low pressure. The speed of the plate v is much less than the average speed u of the gas molecules. Which of the following options is/are true?

  • Options
  • A. The pressure difference between the leading and trailing faces of the plate is proportional to uv
  • B. resistive force experienced by the plate is proportional to v
  • C. The plate will continue to move with constant non-zero acceleration, at all times
  • D. At a later time the external force F balances the resistive force
  • Discuss


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