The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.68 m and 1.02 m, respectively. The respective rotational speeds are 458 rev/min and 4,133 rev/min. Calculate the speeds of the tips of both rotors. main rotor m/s tail rotor m/s Compare these speeds with the speed of sound, 343 m/s. vmain rotor /vsound vtail rotor /vsound