Answer:
Sound waves go back and forth sending signals to your eardrum
Explanation:
Physics involves math because calculations have to be made and u use math to make calculations
The answer is reflection.
The drawing is simple but illustrates the concept beautifully.
The conversion factor you use is 100 cm = 1 m.
You can divide 20 by 100 to get the answer.
20 cm/100 cm =.2 m
Hope this helped!
