Answer:
   
Explanation:
We can write the expression here, but the point of the problem seems to be to see if you can manipulate the controls on the answer box to reproduce that expression.
   
 
        
             
        
        
        
        
Answer:
1.) Frequency F = 890.9 Hz
2.) Wavelength (λ) = 0.893 m
Explanation:
1.) Given that the wavelength = 0.385m
The speed of sound = 343 m / s
To predict the frequency, let us use the formula V = F λ
Where (λ) = wavelength = 0.385m
343 = F × 0.385
F = 343/0.385
F = 890.9 Hz
2.) Given that the frequency = 384Hz
Using the formula again 
V = F λ
λ = V/F
Wavelength (λ) = 343/384
Wavelength (λ) = 0.893 m
The two questions can be solved with the use of formula 
 
        
             
        
        
        
Explanation:
Work = force × displacement
532 J = 48 N × d
d ≈ 11 m
 
        
             
        
        
        
Answer a would be correct since velocity is a vector and has a magnitude and a direction. In this case v₁ = - v₂.