Answer:
adjust chosen Karl Karl jam halted Bernie
 
        
             
        
        
        
Answer:
I believe <u>chemicals</u>, though I might be wrong.
Explanation:
 
        
             
        
        
        
Amplitude is the pair of vertical buttons, so to speak. Compressions are the bunched up vertical lines with the purple arrows pointing left and right. Rarefactions are purple arrows pointing down. Wavelength is crest to crest purple buttons. Associated LH and RH pointing arrows.
        
             
        
        
        
Answer:
12.5J
Explanation:
Given parameters: 
Mass of bucket  = 1.7kg 
Height  = 75cm  = 0.75m 
Unknown;
Work done on the bucket by the person  = ? 
Solution: 
To solve this problem, we use the work done equation;
   Work done  = force x distance  = mgh 
  m is the mass  
   g is the acceleration due to gravity 
   h is the height 
Now, insert parameters and solve ;
 
      Work done  = 1.7 x 9.8 x 0.75  = 12.5J