The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.52 and 1.05 m, respectively. The respective rotational speeds are 452 rev/min and 4,120 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. V Main rotor=____v sound V tail rotor=____v sound

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