The greatest amount of kinetic energy is found with the train because it takes most energy to reach that velocity and also to slow down to a halt.
B. Kinetic energy increases, potential energy decreases.
Answer:
8.46 N/C
Explanation:
Using Gauss law

Gauss's Law states that the electric flux through a surface is proportional to the net charge in the surface, and that the electric field E of a point charge Q at a distance r from the charge
Here, K is Coulomb's constant whose value is 
r = 0.43 + 0.106 = 0.536 m

Answer:
The height of the liquid column doesn't affect the pressure on top pressure ina liquid is affected by the weight of the above it