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The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.50 m and 0.98 m, respectively. The respective rotational speeds are 444 rev/min and 4,136 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 = ____
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