The acceleration should 5.4 m/s^2
        
             
        
        
        
Answer:
Gravity
Explanation:
Thats the answer bucko. Gives the brainliest or I die
 
        
             
        
        
        
Mechanical wave shows dual nature
        
                    
             
        
        
        
They almost entirely reside within galaxies because quasars are a subset of blackholes with a large and fast enough accretion disk to generate a beam of interstellar material perpendicular to itself. This typically only occurs in the largest black holes at the center of galaxies (supermassive blackholes) or at least stellar black holes---which still occur within galaxies because the material is necessary to form them. 
 
        
             
        
        
        
Answer: Igneous rock , formed by the cooling of magma (molten rock) inside the Earth or on the surface. Sedimentary rocks, formed from the products of weathering by cementation or precipitation on the Earth's surface. Metamorphic rocks, formed by temperature and pressure changes inside the Earth.
Explanation: