Question

Particles of sphalerite (specific gravity = 4.00) are settling under the force of gravity in carbon tertrachloride (ccl4) at 20 c with specific gravity of 1.594. The diameter of the sphalerite particles is 0.004 inch (0.10 mm). The volume fraction of the sphalerite in ccl4 is 0.20. What is the settling velocity of sphalerite?

Answer 1

Answer:

Explanation:

Calculation of the terminal velocity of the particles in the water.( According to  Density and velocity of water and air ) .

At 20 °c density of water is 998.28 kg /m³ and dynamic viscosity is 0.001 kg /m.s.

Density of the particle using specific gravity by using the equation.

S.G = Pp/ Pw

Here Pp is the particles density and Pw is the densityof water

Substitute 1.4 for S.G and 998.29 kg / m³ for density of water.

1.4 = Pp / 998.29 Kg /m³

PP = 1397.60

Answer 2

Explanation:

this answer from Example 7.2 in textbook