<span>As a sound source gets closer, both the volume and the pitch of the sound increased. Then, as the sound source passed by you, both the volume and the pitch of the sound decreased.
 Hope this helps</span>
        
                    
             
        
        
        
Answer:
The pressure is 
Explanation:
From the question we are told that 
      The gauge pressure at the mouth is  
      The radius of the column is  
     The speed of the liquid outside the body is  
       The area of the column is  
        The area inside the mouth 
Generally according to continuity equation 
        
=>       
 =>      
=>        
So 
       
=>   
=>   
substituting values 
         
         
Now the height of inside the mouth is  
Now the height of the column is  
Generally according to Bernoulli's  equation 
         ![p_1 =  [\frac{1}{2}  \rho v_2^2 + h_2 \rho g +p_2] -[\frac{1}{2} \rho * v_1^2 + h_1 \rho g ]](https://tex.z-dn.net/?f=p_1%20%3D%20%20%5B%5Cfrac%7B1%7D%7B2%7D%20%20%5Crho%20v_2%5E2%20%2B%20h_2%20%5Crho%20g%20%2Bp_2%5D%20-%5B%5Cfrac%7B1%7D%7B2%7D%20%5Crho%20%2A%20v_1%5E2%20%2B%20h_1%20%5Crho%20g%20%5D)
Now   which is the density of water
 which is the density of water
          is the gauge pressure of the atmosphere which is  zero
 is the gauge pressure of the atmosphere which is  zero
  So
        ![p_1 =  [(0.5 * 1000 * (3.1)^2) +(0.008 * 1000 * 9.8) + 0]-](https://tex.z-dn.net/?f=p_1%20%3D%20%20%5B%280.5%20%2A%201000%20%2A%20%283.1%29%5E2%29%20%2B%280.008%20%2A%201000%20%2A%209.8%29%20%2B%200%5D-)
                                                   ![[(0.5 * 1000 * 0.31^2) + (0.08*1000 * 9.8)]](https://tex.z-dn.net/?f=%5B%280.5%20%2A%201000%20%2A%200.31%5E2%29%20%2B%20%280.08%2A1000%20%2A%209.8%29%5D) 
                           
        
 
        
             
        
        
        
The hidden gene is called recessive
        
                    
             
        
        
        
In collision that are categorized as elastic, the total kinetic energy of the system is preserved such that,
   KE1  = KE2
The kinetic energy of the system before the collision is solved below.
  KE1 = (0.5)(25)(20)² + (0.5)(10g)(15)²
  KE1 = 6125 g cm²/s²
This value should also be equal to KE2, which can be calculated using the conditions after the collision.
KE2 = 6125 g cm²/s² = (0.5)(10)(22.1)² + (0.5)(25)(x²)
The value of x from the equation is 17.16 cm/s.
Hence, the answer is 17.16 cm/s.