Which of the following statements is true?
1. light energy is a form of potential energy only.
2. light energy does not require a medium through which to travel.
3. light energy does not serve any useful purpose.
4. light energy is the same as sound waves.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.