The answer is E. Short and thick while cold.
Oxygen has Atomic number 8 so all isotopes have 8 protons and 8 electrons.
So the number of neutrons in Oxygen-18 = 18 - 8 = 10.
Option B is the correct one.
It only occurs when there is an electric current
It results change only in it's kinetic energy, it's KE will increase in accord with the work-energy theorem
An impact which stops a moving object must do enough work to take away its kinetic energy, so extending the distance moved during the collision reduces the impact force.
