Question

Juan argues that when you burn coal, you use up the coal, and hence you use up all of its energy, and this results in a net loss of energy in the universe. How could you fix Juan's argument? The total energy in the universe remains constant because ________.

Answer 1

Answer:

The burnt coal is not lost but instead converted into other forms of energy such as fire which produces heat which is absorbed by other things and sound waves which release energy into the environment and are also absorbed.

Explanation:

The energy from the coal doesn't disappear, it just gets converted into other, less useful, forms of energy.