# Physics

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A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density of a 240-g rock that displaces 89.0 cm3 of water? (Note that the accuracy and practical applications of this technique are more limited than a variety of others that are based on Archimedesâ€™ principle.)

• Physics -

ρ= m/V =0.240/89â€˘10⁻⁶=2696 kg/m³

• Physics -

A block of wood has a mass of 340g .what is its weight ? ( g = 10n kg-1)

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