There are no necessary conditions there’s always waves the ocean is never still or if your talking about a lake you need movement
        
             
        
        
        
Answer:
 ( 80.87 i - 12.96 j ) m 
Explanation:
Running back movements : 
20⁰ north of east  for  10 meters,  
Runs straight east for 60 meters
runs 35⁰ east of south for 20 meters
A) show vector pointing from the starting point to the end ( where he scored )
The final vector displacement : ( 80.87 i - 12.96 j ) m 
which is : 81.90 m, 9.10⁰ south of east 
attached below is the required  diagram
 
        
             
        
        
        
The air pressure inside the balloon increases as the number of particles increases.
        
             
        
        
        
Answer:
convinience store
Explanation:
convenience store are more like retail store providing everyday goods.
since this kind of store is usually small, maybe not as big as a department store, there is a growing number of such stores creating competitive pressures as such many are providing better value with private-label merchandise (more like re-branding or personalizing the products in the store)