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Physics

Fluid-Mechanics

Easy

Question

What will be the Density of ice is and then a mass M of ice melts?

$\frac{M}{σ - ρ}$
$\frac{σ - p}{M}$
$M [\frac{1}{ρ} - \frac{1}{σ}]$
$\frac{1}{M} [\frac{1}{ρ} - \frac{1}{σ}]$

The correct answer is: $M open square brackets 1 over rho minus 1 over sigma close square brackets$

Volume of ice $equals M over rho$ , volume of water $equals M over sigma$
$therefore$ Change in volume $equals M over rho minus M over sigma equals M open parentheses 1 over rho minus 1 over sigma close parentheses$

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