Answer:
The average angular acceleration is  
Explanation:
From the question we are told that 
   From the question we are told that 
         The length of the bat is 
  \
          The initial linear velocity is  
          The time is  
          The velocity at t is  
   Generally average  angular acceleration is mathematically represented as 
                 
         Where 
 is the finial angular velocity which is mathematically evaluated as   
             
                   
                         
  and 
 is the initial angular velocity which is zero since initial linear velocity is zero
                So
                          
                                
 
        
             
        
        
        
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:· A model is a description of natural phenomenon that scientists can use to make predictions. A good model is both as accurate as possible and as simple as possible, which makes it not only powerful but also easy to understand. However, no matter how good they are, models will almost always have limitations.
Explanation:
 
        
             
        
        
        
Answer:
 The material with higher modulus will stretch less than 
The material with lower modulus 
Explanation:
A material with a higher modulus is stiffer and has better resistance to deformation. The modulus is defined as the force per unit area required to produce a deformation or in other words the ratio of stress to strain.
E= stress/stain
Hooks law states that provided the elastic limit is not exceeded the extension e of a spring is directly proportional to the load or force attached 
F=ke
Where k is the constant which gives the measure of the spring under tension 
 
        
                    
             
        
        
        
The answer is the last option.