Question 2: We will be using a tuning fork to generate a standing sound wave in

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Question 2: We will be using a tuning fork to generate a standing sound wave in a tube. We will do this by adjusting the length of the tube to find successive resonance locations for a fix frequency and wavelength. Use the information in the Introduction to answer the following questions: ed e velocity of a wave using the frequency,f, and wavelength, , of the wave. (1/2 pt) We will be keeping the wavelength the same, but changing the length of the tube. For the first harmonic of a tube closed at one end, write down the equation that relates the length of the tube, 11, with the wavelength, b. c. (1/2 pt) For the third harmonic of a tube closed at one end, write down the equation that relates the length of the tube, 13, with the wavelength, . (12 pt) Since we are not changing the wavelength of our sound wave, 1-13- How does the difference in resonant locations relate to the wavelength? Show by subtracting your two equations 3-2 d.

Explanation / Answer

a) wave speed, v = lamda*f

b) l1 = lamda1/4

d) l3 = 3*lamda3/4

l3 - l1 = 3*lamda/4 - lamda/4

l3 - l1 = 2*lamda/4

l3 - l1 = lamda/2 <<<<-----------Answer

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