Answer:
a)     L = 33.369 m
, b) 21 
Explanation:
The analysis of the ocean depth can be performed assuming that at the bottom of the ocean there is a node and the surface must have a belly, so the expression for resonance is
          λ = 4 L / n
          n = 1, 3, 5, ...
The speed of the wave is
          v = λ f
         v = 4L / n f
         L = n v / 4f
Let's write the expression for the two frequencies
        L = n₁ 343/4 53.95
        L = n₁ 1,589
        
        L = n₂ 343/4 59
        L = n₂ 1.4539
 Let's solve the two equations
        n₁ 1,589 = n₂ 1,459
        n₁ / n₂ = 1.4539 / 1.589
        n₁ / n2 = 0.91498
Since the two frequencies are very close the whole numbers must be of consecutive resonances, let's test what values give this value
   n₁    n₂    n₁ / n₂
   1      3       0.3
   3     5       0.6
   5     7        0.7
   7     9        0.77
   9    11        0.8
   17   19       0.89
   19  21        0.905
   21  23       0.913
   23 25       0.92
Therefore the relation of the nodes is n₁ = 21  and n₂ = 23
Let's calculate
                 L = n₁ 1,589
                 L = 21  1,589
                 L = 33.369 m
b) the number of node and nodes is equal therefore there are 21 antinode
 
        
             
        
        
        
Russia and the United States sign the Moscow Treaty.
        
                    
             
        
        
        
Answer:
C.) The slinky particles move up and down
Explanation:
<u>Transverse Wave</u>-
<em>A wave that has a disturbance perpendicular to the wave motion</em>
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<em>Hello! This is the correct answer! Have a blessed day! :)</em>
<em>If you are in K12, please review the lesson! :)  It will give you some very helpful definitions!  I hope this helped!</em>
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Answer:
The tension on the string is   
 
Explanation:
From the question we are told that 
     The mass of the rock is 
        The density of the rock is  
 
         
Generally the volume of the rock is mathematically evaluated as 
           
substituting values 
         
        
The volume of the rock immersed in water is 
        
  
substituting values 
      
      
mass of water been displaced by the this volume is 
       According to Archimedes principle
     According to Archimedes principle 
=>   
      
The weight of the water displace is  
       
       
       
The actual weight of the rock is  
        
 
       
 
      
The tension on the string is 
         
 
substituting values 
         
 
        