A factory horn emits a steady sound of frequency 600Hz. At an instant, the distance measured along the direction of propagation between the centres of the first and the eleventh rarefaction is 5.5m.
(i) How many complete wavelengths are included in this measured distance?
(ii) Calculate the wavelength of the sound.
(iii) Using the given frequency, compute the speed of sound in air at that temperature.
(iv) If on a hotter day the speed of sound increases by 5% while the horn frequency remains unchanged, determine the new distance between the centres of the first and the eleventh rarefaction.