It’s D. An enlargement (hope this helps!)
        
             
        
        
        
Answer:
 12.7m/s
Explanation:
Given parameters: 
Mass of the diver = 77kg 
Height  = 8.18m 
Unknown: 
Final velocity  = ? 
Solution: 
To solve this problem, we use one of the motion equations. 
             v²  = u² + 2gh 
v is the final velocity 
u is the initial velocity 
g is the acceleration due to gravity 
h is the height
              v² = 0² + (2 x 9.8 x 8.18) 
              v² = 160.3
              v = 12.7m/s
 
        
             
        
        
        
The resistance of the sample is 
Explanation:
The relationship between resistance of a material and temperature is given by the equation

where
 is the resistance at the temperature
 is the resistance at the temperature 
 is the temperature coefficient of resistance
 is the temperature coefficient of resistance
For the sample of nickel in this problem, we have:
 when the temperature is
 when the temperature is 
While the temperature coefficient of resistance of nickel is

Therefore, the resistance of the sample when its temperature is

is

Learn more about resistance:
brainly.com/question/4438943
brainly.com/question/10597501
brainly.com/question/12246020
#LearnwithBrainly
 
        
             
        
        
        
To solve this problem we will apply the concepts related to Reyleigh's criteria. Here the resolution of the eye is defined as 1.22 times the wavelength over the diameter of the eye. Mathematically this is,

Here,
D is diameter of the eye


The angle that relates the distance between the lights and the distance to the lamp is given by,

For small angle, 
 
 
Here,
d = Distance between lights
L = Distance from eye to lamp
For small angle 
Therefore,



Therefore the distance is 5.367km. 
 
        
             
        
        
        
It is same as calculating maths for math