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Find the terminal velocity acquired by a...

Find the terminal velocity acquired by a steel ball of diameter `3.2` mm falling under gravity through an oil of density 920 `"kg m"^(-3)` and viscosity `1.64"N s m"^(-2)`. The density of steel may be taken as 7820 kg `m^(-3)`.

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The correct Answer is:
`2.35xx10^(-2)ms^(-1)`
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