Distance between the two cars is increasing at the rate of 85 mph. 
A passenger in Car-1 says that he is at rest in his own frame of reference,
and Car-2 is moving away from him at 85 mph, toward the west.
        
                    
             
        
        
        
One side of the wave changes speed before the other side, causing the wave to move
        
             
        
        
        
Answer:
Explanation:
one end of tank will be circular in shape . Area of circle A
= π r² , r is radius of the circle 
= 3.14 x 3²
A = 28.26 ft³
To calculate force  on the circular area , we first find pressure at the center of the circle which is at depth equal to r 
pressure at the center = h d g ' here h = depth = r   , d = density of milk 
pressure = 3 x 64.6 x 32 poundal / ft²
= 6201.6 poundal / ft²
total force on circular face = pressure at the center x area of circle 
= 6201.6 x 28.26
= 175257.21 poundal .