The string in the setup sketched above is a rubber band which stretches sizeably

Question

 

The string in the setup sketched above is a rubber band which stretches sizeably under tension.
You measured the mass of the string placing it, removed from the set, on a scale.
Select all correct statements:

 

 

 

 

 

     

If you decrease the number of wavelengths fitting into the distance , the frequency 
of the standing wave increases

 

     

There are 6 wavelengths of the standing wave fitting into the distance 

     

The length of the rubber band relevant for the calculation of the linear mass density is 

     

The length of the rubber band can be measured when the string is without tension (relaxed)

 

     

The linear mass density is independent of the mass  

 

 

 

 

  The length of rubber band relevant for the calculation of the standing wave frequency is 

Explanation / Answer

"If you decrease the number of wavelengths fitting into the distance L, the frequency of the standing wave increases" is true because the wavelength varies inversely with the frequancy "There are 6 wavelengths of the standing wave fitting into the distance" is true because the number of half wavelengths is 12 "The length of the rubber band relevant for the calculation of the linear mass density is L" is not true "The length of the rubber band can be measured when the string is without tension (relaxed)" is true "The linear mass density is independent of the mass M" is not true Linear density mu = m/L' "The length of rubber band relevant for the calculation of the standing wave frequency is L' " is not true

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