The initial position of the object was found to be 134.09 m.
<u>Explanation:</u>
As displacement is the measure of difference between the final and initial points. In other words, we can say that displacement can be termed as the change in the position of the object irrespective of the path followed by the object to change the path. So
Displacement = Final position - Initial position.
As the final position is stated as -55.25 meters and the displacement is also stated as -189.34 meters. So the initial position will be 
Initial position of the object = Final position-Displacement
Initial position = -55.25 m - (-189.34 m) = -55.25 m + 189.34 m = 134.09 m.
Thus, the initial position for the object having a displacement of -189.34 m is determined as 134.09 m.
 
        
             
        
        
        
Answer
given,
Pressure on the top wing = 265 m/s
speed of underneath wings = 234 m/s 
mass of the airplane =  7.2 × 10³ kg
density of air =  1.29 kg/m³
using Bernoulli's equation
  
  
  
  
Applying newtons second law
2 Δ P x A - mg = 0
 
 
     A = 3.53 m²
 
 
        
             
        
        
        
Answer: f=150cm in water and f=60cm in air.
Explanation: Focal length is a measurement of how strong light is converged or diverged by a system. To find the variable, it can be used the formula:
 = (nglass - ni)(
 = (nglass - ni)( -
 -  ).
).
nglass is the index of refraction of the glass;
ni is the index of refraction of the medium you want, water in this case;
R1 is the curvature through which light enters the lens;
R2 is the curvature of the surface which it exits the lens;
Substituting and calculating for water (nwater = 1.3):
 = (1.5 - 1.3)(
 = (1.5 - 1.3)( -
 -  )
)
 = 0.2(
 = 0.2( )
)
f =  = 150
 = 150
For air (nair = 1):
 = (1.5 - 1)(
 = (1.5 - 1)( -
 -  )
)
f =  = 60
 = 60
In water, the focal length of the lens is f = 150cm.
In air, f = 60cm.
 
        
                    
             
        
        
        
Glucose is a simple sugar.
Its chemical formula is  C₆ H₁₂ O₆ .
That tells you that every glucose molecule is made of 6 atoms of carbon, 
12 atoms of hydrogen, and 6 atoms of oxygen.