If a ball of steel (density$$\rho =7.8g\,c{{m}^{-3}}$$) attains a terminal velocity of $$10cm{{s}^{-1}}$$ when falling in a tank of water (coefficient of viscosity $${{\eta }_{water}}=8.5\times {{10}^{-4}}Pa-s$$) then its terminal velocity in glycerin($$\rho =12gc{{m}^{-3}},\,\eta =13.2Pa-s$$) would be nearly

Question

TuteeHUB · Accepted Answer

$$6.45\times {{10}^{-4}}cm{{s}^{-1}}$$

TuteeHUB · Answer

$$1.6\times {{10}^{-5}}cm{{s}^{-1}}$$

TuteeHUB · Answer

$$6.25\times {{10}^{-4}}cm{{s}^{-1}}$$

TuteeHUB · Answer

$$1.5\times {{10}^{-5}}cm{{s}^{-1}}$$

1.	If a ball of steel (density\[\rho =7.8g\,c{{m}^{-3}}\]) attains a terminal velocity of \[10cm{{s}^{-1}}\] when falling in a tank of water (coefficient of viscosity \[{{\eta }_{water}}=8.5\times {{10}^{-4}}Pa-s\]) then its terminal velocity in glycerin(\[\rho =12gc{{m}^{-3}},\,\eta =13.2Pa-s\]) would be nearly
A.	\[1.6\times {{10}^{-5}}cm{{s}^{-1}}\]
B.	\[6.25\times {{10}^{-4}}cm{{s}^{-1}}\]
C.	\[6.45\times {{10}^{-4}}cm{{s}^{-1}}\]
D.	\[1.5\times {{10}^{-5}}cm{{s}^{-1}}\]
Answer» C. \[6.45\times {{10}^{-4}}cm{{s}^{-1}}\]

Discussion

No Comment Found

Related MCQs

Reply to Comment