Physics
Grade-9
Easy

Question

______ separates the system from the surroundings.

  1. Boundary
  2. Membrane
  3. Skin
  4. None of the above

Hint:

The system boundary is a rectangle that you can draw in a use-case diagram to separate the use cases that are internal to a system from the actors that are external to the system.

The correct answer is: Boundary


    The boundary is the closed three-dimensional surface that encloses the system and separates it from the surroundings.

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