An oil drop carrying a charge of 3e falls under gravity with a constant velocity of 4.6x10 m/s between two metal plates 5mm apart. When a p. d of 4600V is applied to the plates, the drop rises steadily. Calculate; (1) Radius of oil drop (2) Velocity with which the oil drop rises [density of oll 900kgm viscosity of air 18x10 "Nim] assume the effect of air buoyancy is negligible​

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

What equation is used to calculate the weight of an object on a plant ?

What quantity do units represent in value