A best describes magnetism
        
             
        
        
        
Answer:
Angular acceleration = 23.68 rad / s²
Explanation:
Given that,
acceleration = 9m/s²
Therefore acceleration of string is 9m/s²
since string is constant in length
cylinder of radius 38.0 cm = 0.38m
Angular acceleration = a / r
Angular acceleration = 9 / 0.38
                                    = 23.68 rad / s²
Angular acceleration = 23.68 rad / s²
 
        
             
        
        
        
The President is Xi Jinping
 
        
                    
             
        
        
        
Explanation:
sound waves go through almost every thing exept solid walls
 
        
             
        
        
        
Answer:
Explanation:
1.	cools quickly on the earth's surface	
Extrusive igneous rock
2.	cools slowly beneath the earth's surface	
Intrusive igneous rock
3.	formed from the remains of living organisms	
Organic sedimentary rocks
 
4.	formed from pieces of other rocks cemented together	
Clastic sedimentary rock
5.	formed when dissolved minerals harden	
Chemical sedimentary rock 
 
6.	formed from heat and pressure 
Metamorphic rocks