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# Density Calculation Using Law of Flotation

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A 0.53 kg piece of wood floats in water but is found to sink in alcohol (specific gravity = 0.79) in which it has an apparent mass of 0.040 kg. What is the SG or density or relative density of the wood?

##### Solution Summary

Calculation of density using law of flotation.

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Mass of wood = 0.53 Kg
= 530 g

Let voulme of wood be V cm^3

Apparant mass in alcohol = mass in in air - loss in mass
Loss in mass = mass in air - apparant mass in alcohol
= 530 - 40 ......... ( ...

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