Question

define density with si unit .relative density of alumminium is 2.7,explain this statement

Answer 1

The SI unit of kilogram per cubic metre (kg/m3) and the cgs unit of gram per cubic centimetre (g/cm3) are probably the most commonly used units for density.1,000 kg/m3 equals 1 g/cm3. (The cubic centimeter can be alternately called a millilitre or a cc.)

density=M/v

Answer 2

Density of a substance is its mass per volume and its SI Unit is kg/meter cube. Its symbol is small letter p.

This means that the density of aluminium is 2.7x103 kg/m^3. If the mass of the same volume of aluminium and water is measured Al will be 2.7 times heavier than water

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