The speed of ultrasound in human tissue is about 1500 m/s. (a) What is the wavelength (in mm) of ultrasound with a frequency of 5.35 MHz? (b) In the whole set of imaging techniques, frequencies in the range 1.00 MHz to 20.0 MHz are used. What is the range of wavelengths corresponding to this range of frequencies? (Enter the longest wavelength in mm and the shortest wavelength in µm.) longest wavelength mm shortest wavelength µm