Answer:
because when an object approaches the speed of light, it's mass starts to increase exponentially, and would be infinite at the speed of light. It would therefore require MORE than an infinite amount of energy to accelerate even a single electron to the speed of light
Answer:
Energy is stored in the bonds between atoms
They differ because they are transverse wave. That is their direction of travel is perpendicular to its vibrations.
You just multiply these two numbers, it's 1250J