If an oil drop of density $0.95 \times 1 0^{3} k g m^{- 3}$ and radius $1 0^{- 4} c m$ is falling in air whose density is $1.3 k g m^{- 3}$ and coefficient of viscosity is $18 \times 1 0^{- 6} k g m^{- 1} s^{- 1}$ . Calculate the terminal speed of the drop.

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If an oil drop of density

0.95 \times 1 0^{3} k g m^{- 3}

and radius

1 0^{- 4} c m

is falling in air whose density is

1.3 k g m^{- 3}

and coefficient of viscosity is

18 \times 1 0^{- 6} k g m^{- 1} s^{- 1}

. Calculate the terminal speed of the drop.

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