Question

The density of solid is 7.9 g cm-3 in air. What is the density of the solid in SI unit?

Answer 1

Solution :

Relative density= (Density of substance / Density of water)

relative density = 7.5/1 = 7.5

water density =1g/cm^3

Explanation:

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Answer 2

The density of the solid in SI unit is $7900\ kg/m^3$.

Explanation:

Given that,

The density of solid is, $d=7.9\ g/cm^3$ in air

We need to convert the density of solid in SI unit. We know that,

1 gram = 0.001 kg

1 cm = 0.01 m

The density of the solid is :

$d=7.9\ \dfrac{g}{cm^3}=7.9\times \dfrac{0.001\ kg}{(0.01\ m)^3}$

$d=7900\ kg/m^3$

So, the density of the solid in SI unit is $7900\ kg/m^3$. Hence, this is the required solution.

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