If a ball of steel (density ρs=7.8 g/cm3) attains a terminal velocity of 10 cm/s when falling in a tank of water (coefficient of viscosity, ηw=8.5×10−4 Pa-s). Then, its terminal velocity in glycerine (ρg=1.2 g/cm3,ηg=13.2 Pa-s) would be nearly:

If a ball of steel (density ρs=7.8 g/cm3) attains a terminal velocity

1.	If a ball of steel (density ρs=7.8 g/cm3) attains a terminal velocity of 10 cm/s when falling in a tank of water (coefficient of viscosity, ηw=8.5×10−4 Pa-s). Then, its terminal velocity in glycerine (ρg=1.2 g/cm3,ηg=13.2 Pa-s) would be nearly:
Answer» If a ball of steel (density $ρ_{s} = 7.8 {g/cm}^{3}$ ) attains a terminal velocity of $10 cm/s$ when falling in a tank of water (coefficient of viscosity, $η_{w} = 8.5 \times 10^{- 4} Pa-s$ ). Then, its terminal velocity in glycerine ( $ρ_{g} = 1.2 {g/cm}^{3}, η_{g} = 13.2 Pa-s$ ) would be nearly:

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If a ball of steel (density ρs=7.8 g/cm3) attains a terminal velocity of 10 cm/s when falling in a tank of water (coefficient of viscosity, ηw=8.5×10−4 Pa-s). Then, its terminal velocity in glycerine (ρg=1.2 g/cm3,ηg=13.2 Pa-s) would be nearly:

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