The answer is C. 15 meters North
Displacement is the distance and direction from the origin. If you move 20 meters North, your displacement is 20 meters North. If you move 5 meters South, you are basically moving back the way you came by 5 meters, which means you are now 15 meters North.
I hope this helped! :)
        
             
        
        
        
Answer:
The correct answer to the question is
B. It always decreases
Explanation:
To solve the question, we note that the foce of gravity is given by
 where
 where 
G= Gravitational constant
m₁ = mass of first object
m₂ = mass of second object
r = the distance between both objects
If the mass of one object remains unchanged while the distance to the second object and the second object’s mass are both doubled, we have
 =
 = 
Therefore the gravitational force is halved. That is it will always decrease
 
        
             
        
        
        
I’m gonna have to say “Ocean waves” as the answer
        
                    
             
        
        
        
Answer:
1) D
2) A
Explanation:
1) Each group has the same number of valence electrons, which are the outer electrons. 
2) Ionic bonds are between a metal and non - metal, the metal being sodium and the non - metal being chlorine.
 
        
             
        
        
        
the answer is CaO because that's what my homework says is correct