Answer:
about 93 billion light years
Explanation:
The observable Universe is, of course, much larger. According to current thinking it is about 93 billion light years in diameter.
Greater amplitude waves have more energy and greater intensity, so they sound louder. ... The same amount of energy is spread over a greater area, so the intensity and loudness of the sound is less. This explains why even loud sounds fade away as you move farther from the source.
Temperature: a measure of the average kinetic energy of particles in an object
heat: the total energy of any closed system, including all internal kinetic and potential energy of the system
thermal energy: something that flows into a substance
I believe the answer is reversible