what does hitting an object cause?
frequency waves harmful substances Electrical energy chemical reaction friction Movement heat energy chemical changes
A B C D E F G H
By it's nature, a vibration is a frequency wave .
hitting an object causes frequency waves
what does hitting an object cause? (A) frequency waves (B) harmful substances (C) Electrical energy (D) chemical reaction (E) friction (F) Movement (G) heat energy (H) chemical changes