Consider the experimental setup shown below. The length of the string between the string vibrator and the pulley is L = 1.20 m. The linear density of the string is μ= 0.004 kg/m. The string vibrator can oscillate at any frequency. The hanging mass is 3.00 kg.(a) What are the wavelength (in m) and frequency (in Hz) of the n = 7 mode?wavelengthfrequency(b) The string oscillates the air around the string. What is the wavelength (in m) of the sound if the speed of the sound is vs = 343.00 m/s?