Now, assume that you have changed the magnitude or direction of the electric field, so that the particle accelerated until it reached terminal velocity. (in reality this will happen very quickly)At this terminal velocity, the particle is at constant velocity. (You may wish to look up what terminal velocity is!)Which forces are present in this case?

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思路分析

To assess which forces are present at terminal velocity for a charged particle in a fluid under an electric field, we start by listing the forces that can act on such a particle: drag, gravity (weight), buoyancy, and electric force. Option a: Drag Force, F = v*gamma. In a fluid, the drag force opposes the motion and increases with speed. At terminal velocity, the velocity is constant, but the drag force is still present and exactly balances the sum of other f......Login to view full explanation