Question

the radius of ball A is twice that of B. What will be the ratio of their terminal velocities in a liquid. Why?​

Answer 1

Answer:

Dear alice Assuming that u know terminal velocity is directly proportional√R

R=Radius of sphere

Hence the required answer is √2:1

Pls mark it brainleast

Explanation:

Answer 2

The ratio of teminal velocities in a liquid will be 4:1.

Explanation:

Given- Radius of a ball A is twice that of B.

$r_{A}$ = $2r_{B}$

Terminal velocity

V= $\frac{2gr^{2} }{9n}$ ×(ρ-ρ₀)                    ,where n is the coefficient of viscosity of medium.

Cleary V∝ $r^{2}$ ,  

so, $\frac{V_{A} }{V_{B} } = (\frac{r_{A} }{r_{B} } )^{2}$

$\frac{V_{A} }{V_{B} }$ = $\frac{4}{1}$

$V_{A} :V_{B}$ = $4:1$