Three basic types of population distribution within a regional range are (from top to bottom) uniform, random, and clumped.
Question 2 is because the passengers have inertia, which is a tendency to resist change in motion
The relationship between inductance and frequency can be clearly described using the following equation of inductive reactance:
Xl = 2*pi*f*L ; simplifying:
L = Xl / 2*pi*f
Therefore, as what we saw, inductance and frequency are inversely proportional. To add up, when inductance increases the frequency would decrease.