H ( hydrogen ) is the answer I believe.
Answer:
Melting butter
Explanation:
You can reverse the change of butter back to its original state but you can never reverse the rest back to there original state
Answer:
396811.337 J
Explanation:
The cost of one short ton of coal = $56.45
The energy related to the short ton of coal = 
Thus, As according to the question,
$56.45 of coal have
of energy.
$1 of coal have
of energy.
<u>The amount of energy = 396811.337 J</u>
Scientist arrange there data in coding and research.
Answer:
B if they run out of fuel then they would probably keep going because there is nothing that would stop them other than like a planet or something.
Explanation: