Question

Any four place wher unit is required

Answer 1

We usually write units just using their abbrevations.

Example: km for kilometer.

Example: m/s (or m s-1) for meter per second. m/s is a unit of speed.

Example: kg/m3 (or kg m-3) for kilogram per cubic meter. kg/m3 is a unit of density: how much mass per unit of volume.

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