Answer: Its velocity was 20 km/s southward. 
Hope this helps!!
 
        
                    
             
        
        
        
Answer:
the world will end on few hours............
 
        
                    
             
        
        
        
Answer:
e. equal numbers of protons and neutrons in the nucleus orbited by varying numbers of electrons
Explanation:
 
        
             
        
        
        
Answer:
The formula for specific gravity, given that the reference substance is water, is the density of the object divided by the density of the water.