Question

he ozontal direct l fatheelical, giving charged droplets cceieration The result is that the droplet falls in a straight line that makes an angle θ with the vertical Show that where v; is the terminal speed along the angled path. 3-11. A charged oil droplet falls 5.0 mm in 20.0 s at terminal speed in the absence of an electric field. The specific gravity of air is I The viscosity of air is 1.80 × 10-s N-s/m. (a) what are the mass and radius of the drop? (b) If the droplet carries two units of electric charge and is in an electric field of 2.5 × 105 V/m, what is the ratio of the electric force to the gravitational force on the droplet? .35 × 10) and that of oil is 0.75.

Please provide a detailed solution to problem 3-11. Thank you!

Answer 1

"Rightarrow data: distance (s) = 5mm = 5 times 10^-3 m , t = 20 sec S_air = 1.35 times 10^-3 , S_oil = 0.75 eta = 1.8 times 10^-5 N.s/m^2 a0 terminal velocity is given as V = 2/9 r^2