Answer:
Limited and self-governed?
Explanation:
I think sooo
 
        
             
        
        
        
Answer: The compression pulse which is produced when the hammer hits the metal bounces backwards and forwards within the metal. Most of the pulse (sound wave) is reflected within the metal rather than transmitted outside the metal into the air because the speed of sound in a metal is much bigger than the speed of sound in air.
Explanation: Brainelist Me
 
        
                    
             
        
        
        
Answer:
I would go with the first one but if u can take it again go wit the last one 
Explanation: