Explanation:
It is a good idea to start with room temperature water in the calorimeter because the room temperature water helps to determine the heating up/cooling down because of the environment as the experiment takes place. Because the calorimeter heat is the same as the heat of the water.
 
        
                    
             
        
        
        
The relationship between frequency and wavelength for an electromagnetic wave is

where
f is the frequency

 is the wavelength

 is the speed of light.
For the light in our problem, the frequency is 

, so its wavelength is (re-arranging the previous formula)
 
 
        
        
        
 What about it?? 
Please explain and I will help.
I don’t know what you’re asking.
        
                    
             
        
        
        
Answer:
The f-ratio describes the relationship between the lens diameter and the focal length and is calculated by dividing the focal length by the diameter of the lens. For example, if a lens were to have a focal length of 50mm and a diameter of 10mm, then the f-ratio would be 50mm/10mm=5 or otherwise referred to as f5.
Explanation:
 
        
                    
             
        
        
        
Answer:
B : It will avoid the distortion from the atmosphere and give scientists more accurate data
Explanation: