First slide

Pressure in a fluid-mechanical properties of fluids

Question

Equal masses of water and a liquid of density 2 are mixed together, then the mixture has a density of

Moderate

A

2/3
B

4/3
C

3/2
D

3

Solution

If two liquid of equal masses and different densities are mixed together then density of mixture
$ρ = \frac{2 ρ_{1} ρ_{2}}{ρ_{1} + ρ_{2}} = \frac{2 \times 1 \times 2}{1 + 2} = \frac{4}{3}$

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