Very low frequency sound, below the threshold of human hearing (called infrasound) has been shown to cause feelings of fear and trepidation in humans. A natural example of this is the growl of the Bengal tiger, with a peak frequency of 19.0 Hz, which isintended to frighten its prey. In a well-documented case, after workers in a laboratory clean room expressed emotions ranging from fright to depression while working in the lab, it was shown that the ventilation fan operating at one end of the room wasgenerating standing sound waves with a frequency of 19.0 Hz along the length of the lab.(a) If the temperature in the clean room was 15.1°C, what was the speed of sound in the room at the time of this event? (Give your answer to at least three significant figures.)(b) What was the wavelength of the sound produced by the ventilation fan? (Give your answer to at least three significant figures.)(c) What would the three smallest lengths of the room have to be for a standing sound wave to be generated in the room? (Give your answers from smallest to largest.)first lengthsecond lengththird length

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