Answer:
Mechanical waves require a medium to transfer their energy.
What are examples of mechanical waves?
Explanation:
Mechanical waves require a medium to transfer their energy.
What are examples of mechanical waves?
Answer:
heat and sound.
Explanation:
Though some would argue that the heat is not useful. I guess it depends on if your hands are cold.
I believe it would be 172 J (or 1.72 · 10² J)
