Answer:
45.88297 m
Violet
Explanation:
x = Gap between holes = 5.9 mm
 = Wavelength = 527 nm
 = Wavelength = 527 nm
D = Diameter of eye = 5 mm
L= Distance of observer from holes
From Rayleigh criteria we have the relation

A person could be 45.88297 m from the tile and still resolve the holes
Resolving them better means increasing the distance between the observer and the holes. It can be seen here that the distance is inversely proportional to the wavelength. Violet has a lower wavelength than red so, violet light would resolve the holes better.
 
        
             
        
        
        
Answer:
The distance of stars and the earth can be averagely measured by using the knowledge of geometry to estimate the stellar parallax angle(p).
From the equation below, the stars distances can be calculated.
D = 1/p
Distance = 1/(parallax angle)
Stellar parallax can be used to determine the distance of stars from an observer, on the surface of the earth due to the motion of the observer. It is the relative or apparent angular displacement of the star, due to the displacement of the observer.
Explanation:
Parallax is the observed apparent change in the position of an object resulting from a change in the position of the observer. Specifically, in the case of astronomy it refers to the apparent displacement of a nearby star as seen from an observer on Earth.
The parallax of an object can be used to approximate the distance to an object using the formula:
D = 1/p
Where p is the parallax angle observed using geometry and D is the actual distance measured in parsecs. A parsec is defined as the distance at which an object has a parallax of 1 arcsecond. This distance is approximately 3.26 light years
 
        
             
        
        
        
Answer:
a
The speed is    
 
b 
 The distance is  
Explanation:
From the question we are told that 
      The speed of the banana is  
    The distance from my  location is   
  
      The time taken is  
The speed of the ice cream is 
           
substituting values 
         
         
The distance of separation between i and Valdimir is the same as the distance covered by the banana
    So  
            
 
substituting values 
         
          
 
       
 
        
             
        
        
        
Approximately 150-200 species.