Answer:
A. 16.9 m
Explanation:
I think this is the answer i am not sure
but hope it helps
 
        
                    
             
        
        
        
She should use shorter focal length to fit the entire landscape which she is trying to photograph into her picture.
What is focal length?
The focal length is a measure of how strongly the system converges or diverges light.
A positive focal length indicates that a system converges light, while a negative focal length indicates that the system diverges light.
For a standard rectilinear lens, 
FOV = 2 arctan (x/2f)
FOV ∝ 1 / f
where x is the diagonal of the film. 
Focal length (f) and field of view (FOV) of a lens are inversely proportional.
From the equation we can say that,
A shorter focal length gives you a wide angle of view which allows more view to fit in the frame.
Hence,
She should use shorter focal length to fit the entire landscape which she is trying to photograph into her picture.
Learn more about focal length here
<u>brainly.com/question/13885819</u>
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It depends how you want it to work do you want to take a picture oh yea and to do that you must create a account btw
        
                    
             
        
        
        
-Synodic period is the period of celestial bodies observed on the moving planet(mostly earth) 
Sideral period is the period comparing to the fixed stars without motion of the earth involved.
(I will explain the second question with an example, so it's easier to understand)
-For Sideral month for example of the moon it cactually complete one revolution in around 27.3 days.
However, since the earth moves, for us it took some more time to see the moon the same as before (fullmoon to fullmoon) again. That make synodic month of the moon to be around 29.5 days.
        
             
        
        
        
Answer:
f =ma = 0.015 * 55 = 0.825 N 
so yeah that's ur ans