The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.50 m and 1.03 m, respectively. The respective rotational speeds are 456 rev/min and 4,140 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. main rotor V sound Vtail rotor sound