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Question 11: Density of air is 1.2 kg/m3. Change it to g/cm3.

Solution

Ginven density of air,

Now we know that, 1 kg = 1000 g …. (i)
1 m = 100 cm ⇒ 1 m3 = 106cm3 …. (ii)

Substitute for kilogram and meter from equations (i) and (ii),

Therefore,

This is the required equation.

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