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Reynold's Number

If the termin...

Question

If the terminal speed of a sphere of gold (density = $19.5 k g / m^{3}$ ) is $0.2 m / s$ in a viscous liquid(density = $1.5 k g / m^{3}$ ), find the terminal speed of a sphere of silver (density = $10.5 k g / m^{3}$ ) of the same size in the same liquid

0.4 m / s

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0.133 m / s

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0.1 m / s

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0.2 m / s

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Solution

The correct option is C $0.1 m / s$
$V_{T} = \frac{2}{9 η} r^{2} (d_{1} - d_{2}) g$
$\frac{V_{T_{2}}}{0.2} = \frac{10.5 - 1.5}{19.5 - 1.5}$
$V_{T_{2}} = 0.1 m / s$

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Similar questions

= 19.5 {kg/m}^{3}

0.2 m/s

= 1.5 {kg/m}^{3}

= 10.5 {kg/m}^{3}

A

(density = 19.5 {kg/m}^{3})

0.2 m/s

(density = 1.5 {kg/m}^{3})

B

density = 10.5 {kg/m}^{- 3})

A

(density = 19.5 {kg/m}^{3})

0.2 m/s

(density = 1.5 {kg/m}^{3})

B

density = 10.5 {kg/m}^{- 3})

= 19.5 {kg/m}^{3}

0.2 m/s

= 1.5 {kg/m}^{3}

= 10.5 {kg/m}^{3}

19.5 {g/cm}^{3})

0.2 m/s

1.5 {g/cm}^{3}

= 10.5 {g/cm}^{3})

m/s

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