The characteristics of standing waves allows to find the result for the speed of the wave is: 
- The speed wave is:  v = 10 m / s
The wave is a way of transmitting energy without mass displacement, , in the attachment we can see a diagram of the standing wave. 
Each cycle corresponds to half a wavelength,  they indicate that the frequency is 2.50 Hz and there are three cycles, so the wavelength is:
       L =  
 
       λ = 2L/n 
       λ = 2 6 /3
        λ = 4 m 
Wave speed is related to wavelength and frequency
          v = λ f
          v = 4 2.5 
          v = 10 m / s
 
In conclusion, using the characteristics of standing waves we can find the result for the speed of the wave is:
- The wave speed is:   v = 10 m / s
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Answer: action forc roketorce
reaction force is engine fires
 
        
             
        
        
        
The JWST is postioned about 1.5 million kilometers from the earth on the side facing away from the sun
        
             
        
        
        
We have that the spring constant is mathematically given as

Generally, the equation for angular velocity is mathematically given by

Where
k=spring constant 
And

Therefore

Hence giving spring constant k 

Generally 
Mass of earth 
Period for on complete resolution of Earth around the Sun


Therefore


In conclusion
The effective spring constant of this simple harmonic motion is

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