Momentum and CollisionHard

Question

If the terminal speed of a sphere of gold (density = 19.5 kg/m3) is 0.2 m/s in a viscous liquid (density = 1.5 kg/m3), find the terminal speed of a sphere of silver (density = 10.5 kg/m3) of the same size in the same liquid.

Options

A.0.4 m/s   
B.0.133 m/s
C.0.1 m/s   
D.0.2 m/s

Solution

vT ∝ (ρB - ρL)

= 0.1 m/s

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