Question

raindrop of radius 0.2 mm falls through air. If the viscosity of air is 18 x 10 - PI, find the viscous drag acting on the drop when its speed is

1 ms

a) 68.7 x 10 -9 N

b) 67.8 x 10 -9 N

c) 63 x 10 -9 N

d) 65.3 x 10-9 N


pls help

no spamming​

Answer 1

Answer:

HOPE IT HELPS YOU!!

PLS MARK ME AS BRAINLIEST!!

Explanation:

Viscous force    F=6πηrv

So,    F=6π×1.8×10−4×0.2×10−3×2

⟹ F=1.36×10−6 N