Question

what is density ? what is it's use
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Answer 1

Answer:

Density is defined as mass per unit volume.

It is used to find the molecular structure (how denser is the object??) of a body

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Answer 2

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth’s density is 5.51 grams per cubic centimetre. Density can also be expressed as kilograms per cubic metre (in MKS or SI units).

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