Answer:
A homopolar motor is a direct current electric motor with two magnetic poles, the conductors of which always cut unidirectional lines of magnetic flux by rotating a conductor around a fixed axis so that the conductor is at right angles to a static magnetic field.
Explanation:
 
        
                    
             
        
        
        
 when we find the distance we will add all the blocks so 
 distance = 6+6+4
 distance = 14blocks
 when we find the displacement we will add and minus too
 As you can read he goes to the south 6 and to north 6 so he leave that place and back to the place again so the displacement is 0. and again he goes to the west 4 blocks so the displacement = <em><u>4blocks</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>west</u></em>
 
        
                    
             
        
        
        
Answer:
I think the answer is  
a "cookbook" recipe for performing scientific investigations
Explanation: