C, planets orbit around the sun because of gravity
        
             
        
        
        
Answer:
only the weight of the ball will act on the ball
Explanation: There is no contact force on the ball. Also there is no air resistance on the ball so the friction force on the ball due to air is not shown
 
        
             
        
        
        
Answer:
An arrow represents displacement. Because it's a vector quantity. 
Vector quantity= Direction+Magnitude 
When an arrow is put above a unit like
it means that it's a vector quantity.
Hope this helps ;) ❤❤❤
 
        
             
        
        
        
Answer:
option (A) - false
option (B) - true
option (C) - true
option (D) - true
option (E) - true
option (F) - true
Explanation:
The sound waves are mechanical waves that means they need a medium to travel.
The light waves are non mechanical waves it means they do not need a medium to travel.
Sound cannot travel trough vacuum.
Sound can travel through air and water.
Light can travel trough vacuum and in air and in water.
 
        
             
        
        
        
c] Electrons
Electron gets transferred