Radiometric dating?
Also, possibly radiocarbon dating 
        
             
        
        
        
Answer I don’t knows
Explanation: i don’t know I just want points
 
        
                    
             
        
        
        
Answers:
a) 
b) 
c) 
Explanation:
<h3>a) Impulse delivered to the ball</h3>
According to the Impulse-Momentum theorem we have the following:
 (1)
 (1)
Where:
 is the impulse
 is the impulse
 is the change in momentum
 is the change in momentum
 is the final momentum of the ball with mass
 is the final momentum of the ball with mass  and final velocity (to the right)
 and final velocity (to the right) 
 is the initial momentum of the ball with initial velocity (to the left)
 is the initial momentum of the ball with initial velocity (to the left) 
So:
 (2)
 (2)
 (3)
 (3)
 (4)
 (4)
 (5)
 (5)
<h3>b) Time </h3>
This time can be calculated by the following equations, taking into account the ball undergoes a maximum compression of approximately  :
:
 (6)
 (6)
 (7)
 (7)
Where:
 is the acceleration
 is the acceleration
 is the length the ball was compressed
 is the length the ball was compressed
 is the time
 is the time
Finding  from (7):
 from (7):
 (8)
 (8)
 (9)
 (9)
 (10)
 (10)
Substituting (10) in (6):
 (11)
 (11)
Finding  :
:
 (12)
 (12)
<h3>c) Force applied to the ball by the bat </h3>
According to Newton's second law of motion, the force  is proportional to the variation of momentum
 is proportional to the variation of momentum   in time
 in time   :
:
  (13)
 (13)
  (14)
 (14)
Finally:
 
 
        
                    
             
        
        
        
The buoyant force exerted by a liquid is equal to the weight of the fluid <span>displaced.</span>
        
                    
             
        
        
        
Answer:
False?
Explanation:
Hope this helps you!
If this is wrong next time I will be better!